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https://issues.apache.org/jira/browse/MNG-6982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470893#comment-17470893
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Falko Modler commented on MNG-6982:
-----------------------------------

Yes I did: 
https://github.com/gitflow-incremental-builder/gitflow-incremental-builder/blob/master/src/main/java/com/vackosar/gitflowincrementalbuild/boundary/UnchangedProjectsRemover.java#L481-L483
See also: 
https://github.com/gitflow-incremental-builder/gitflow-incremental-builder/blob/master/src/main/java/com/vackosar/gitflowincrementalbuild/boundary/UnchangedProjectsRemover.java#L371-L378

This is certainly a very specific case but in that extension I need to 
(partially) operate on raw models to detect BOMs (that are part of the reactor) 
as upstream/downstram modules: 
https://github.com/gitflow-incremental-builder/gitflow-incremental-builder/issues/241

> PluginParameterExpressionEvaluator fails with NPE if created without 
> MojoExecution
> ----------------------------------------------------------------------------------
>
>                 Key: MNG-6982
>                 URL: https://issues.apache.org/jira/browse/MNG-6982
>             Project: Maven
>          Issue Type: Bug
>          Components: Plugin API
>    Affects Versions: 3.6.3
>         Environment: Maven 3.6.3
>            Reporter: Falko Modler
>            Priority: Major
>
> This constructor of PluginParameterExpressionEvaluator is not requiring a 
> MojoExecution parameter:
> https://github.com/apache/maven/blob/78f605e377a6450828e8b3e516d132e6797603df/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java#L96-L99
> But if created this way, the evaluator will fail with a NullPointerException 
> while trying to get the MojoDescriptor here:
> https://github.com/apache/maven/blob/78f605e377a6450828e8b3e516d132e6797603df/maven-core/src/main/java/org/apache/maven/plugin/PluginParameterExpressionEvaluator.java#L205



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