.. toctree::
    :maxdepth: 2

    documentai_v1/services
    documentai_v1/types
    documentai_v1beta3/services
    documentai_v1beta3/types
    documentai_v1beta2/services
    documentai_v1beta2/types

For a list of all google-cloud-documentai releases:

.. toctree::
   :maxdepth: 2

   changelog