Just another example out of the different API documentations. In the guide here: The ExampleGen TFX Pipeline Component | TensorFlow the example_gen_pb2 is displayed under the " Custom input/output split". It must be in the actual code on Github but I can’t seem to find it in the API documentation here: TFX API Reference | TensorFlow . If you would like any help documenting where the updates are needed in the documentation I would be happy to assist!