Add ByteArrayOutputStream.readFrom(InputStream)
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                 Key: IO-152
                 URL: https://issues.apache.org/jira/browse/IO-152
             Project: Commons IO
          Issue Type: New Feature
          Components: Streams/Writers
            Reporter: Jukka Zitting
            Priority: Minor
             Fix For: 1.4


It would be useful to have a ByteArrayOutputStream.readFrom(InputStream) method 
to mirror the existing writeTo(OutputStream) method. A call like 
baos.readFrom(in) would be semantically the same as IOUtils.copy(in, baos), but 
would avoid an extra in-memory copy of the stream contents, as it could read 
bytes from the input stream directly into the internal ByteArrayOutputStream 
buffers.

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