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How do you stop the output printing:
for each data source added?
You cannot with the standard
WriterFilewhich is the one creating the output.
You can if you subclass it, check the sources, and create your own output.
Thank you. How do I subclass it, check the sources and create a different output?
There is no other way.
In any case the expected (even if small) API of the
Writershould have a small documentation page to ease up subclassing.