default /* @Nullable */ IOutputSink createOutputSink(final IResultSaver saver) {
    return null;
  }
Create a sink that can write the decompiled output from this context element.

<p>If this context source type does not support writing, return a null sink.</p>

@param saver the source result saver for this decompiler, for delegation
@return the output sink, or null if unwritable
src/org/jetbrains/java/decompiler/main/extern/IContextSource.java