gcs_source Google Cloud Storage location for the source input. This can
be a single file (for example,
``gs://translation-test/input.docx``) or a wildcard (for
File mime type is determined based on extension. Supported
mime type includes:
- ``pdf``, application/pdf
The max file size to support for ``.docx``, ``.pptx`` and
``.xlsx`` is 100MB. The max file size to support for
``.pdf`` is 1GB and the max page limit is 1000 pages. The
max file size to support for all input documents is 1GB.
This field is a member of `oneof`_ ``source``.