Document how to use generator with bulk() #813
Description
It would be nice if https://elasticsearch-py.readthedocs.io/en/master/helpers.html?highlight=generator#bulk-helpers showed an example of how to use a generator with bulk().
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It would be nice if https://elasticsearch-py.readthedocs.io/en/master/helpers.html?highlight=generator#bulk-helpers showed an example of how to use a generator with bulk().