[jira] [Commented] (PDFBOX-2423) Page tree handling needs rewriting

[Tilman Hausherr (JIRA)]

    [ 
https://issues.apache.org/jira/browse/PDFBOX-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14233588#comment-14233588
 ] 

Tilman Hausherr commented on PDFBOX-2423:
-----------------------------------------

p.14 of PDFBOX-1359 brings this stack overflow:
{code}
        at sun.awt.image.BufImgSurfaceData.initRaster(Native Method)
        at 
sun.awt.image.BufImgSurfaceData.createDataIC(BufImgSurfaceData.java:257)
        at sun.awt.image.BufImgSurfaceData.createData(BufImgSurfaceData.java:90)
        at 
sun.awt.image.BufImgSurfaceManager.<init>(BufImgSurfaceManager.java:55)
        at sun.awt.image.SurfaceManager.getManager(SurfaceManager.java:79)
        at sun.java2d.SurfaceData.getPrimarySurfaceData(SurfaceData.java:273)
        at 
sun.java2d.SunGraphicsEnvironment.createGraphics(SunGraphicsEnvironment.java:180)
        at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1184)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:919)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.showForm(PDFStreamEngine.java:202)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:78)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:242)
        at org.apache.pdfbox.rendering.PageDrawer.access$400(PageDrawer.java:79)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:934)
        at 
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:874)
        at 
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:838)
        at 
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:829)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:497)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:463)
        at 
org.apache.pdfbox.contentstream.PDFStreamEngine.processChildStream(PDFStreamEngine.java:218)
{code}


> Page tree handling needs rewriting
> ----------------------------------
>
>                 Key: PDFBOX-2423
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2423
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 1.8.7, 2.0.0
>            Reporter: John Hewson
>            Assignee: John Hewson
>            Priority: Blocker
>             Fix For: 2.0.0
>
>         Attachments: 025957.pdf, 26101_Colors.ai-1.png, 
> 26101_Colors.ai-1.png-diff.png, Basiswissen-Vorschriften.pdf-3.png, 
> Basiswissen-Vorschriften.pdf-3.png-diff.png, 
> Basiswissen-Vorschriften.pdf-4.png, 
> Basiswissen-Vorschriften.pdf-4.png-diff.png, PDFBOX-1058.pdf-1.png, 
> PDFBOX-1058.pdf-1.png-diff.png, PDFBOX-1058.pdf-4.png, 
> PDFBOX-1058.pdf-4.png-diff.png, PDFBOX-1094-tiling_pattern.pdf, 
> PDFBOX-1711-cmyk.pdf-1.png, PDFBOX-1711-cmyk.pdf-1.png-diff.png, 
> PDFBOX-1794-vattenfall.pdf-1.png, PDFBOX-1794-vattenfall.pdf-1.png-diff.png, 
> PDFBOX-1917.pdf-1.png, PDFBOX-1917.pdf-1.png-diff.png, 
> asy-functionshading.pdf-1.png, asy-functionshading.pdf-1.png-diff.png, 
> bugzilla869140.pdf, example_026.pdf-1.png, gs-bugzilla694385.pdf, 
> jagpdf_doc_patterns.pdf
>
>
> The way in which PDFBox handles the Page tree needs to be rewritten, 
> preferably from scratch. Currently the document catalog returns the raw 
> objects from the page tree, wrapped in either a PDPage or PDPageNode.
> We need to abstract over the page tree and get rid of PDPageNode, we should 
> provide methods which can add/remove PDPage objects *only*. The existing 
> low-level access to the page tree is not needed at the PD-level.
> Inheritance of page properties such as crop box, resources, and rotation 
> should be reimplemented to use whatever new page tree abstraction we invent. 
> We can finally remove the old broken methods which didn't look up the 
> inheritance tree when retrieving these values.



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