This PR was generated using Autosynth. 🌈
<details><summary>Log from Synthtool</summary>
```
2020-04-21 06:13:40,494 synthtool > Executing /tmpfs/src/git/autosynth/working_repo/synth.py.
On branch autosynth
nothing to commit, working tree clean
2020-04-21 06:13:40,561 synthtool > Ensuring dependencies.
2020-04-21 06:13:41,220 synthtool > Cloning googleapis.
2020-04-21 06:13:41,884 synthtool > Pulling Docker image: gapic-generator-python:latest
latest: Pulling from gapic-images/gapic-generator-python
Digest: sha256:c7e7d84adcfc968e057c8be5f682560ca3ea5ac8c8768f2dec1361f1a12da765
Status: Image is up to date for gcr.io/gapic-images/gapic-generator-python:latest
2020-04-21 06:13:42,776 synthtool > Generating code for: google/cloud/documentai/v1beta2.
2020-04-21 06:13:47,365 synthtool > Generated code into /tmpfs/tmp/tmprjfn5hox.
.coveragerc
.flake8
.github/CONTRIBUTING.md
.github/ISSUE_TEMPLATE/bug_report.md
.github/ISSUE_TEMPLATE/feature_request.md
.github/ISSUE_TEMPLATE/support_request.md
.github/PULL_REQUEST_TEMPLATE.md
.github/release-please.yml
.gitignore
.kokoro/build.sh
.kokoro/continuous/common.cfg
.kokoro/continuous/continuous.cfg
.kokoro/docs/common.cfg
.kokoro/docs/docs.cfg
.kokoro/presubmit/common.cfg
.kokoro/presubmit/presubmit.cfg
.kokoro/publish-docs.sh
.kokoro/release.sh
.kokoro/release/common.cfg
.kokoro/release/release.cfg
.kokoro/trampoline.sh
CODE_OF_CONDUCT.md
CONTRIBUTING.rst
LICENSE
MANIFEST.in
docs/_static/custom.css
docs/_templates/layout.html
docs/conf.py.j2
noxfile.py.j2
renovate.json
setup.cfg
2020-04-21 06:13:47,458 synthtool > Replaced '\\["2\\.7", ' in noxfile.py.
2020-04-21 06:13:47,459 synthtool > Replaced '"3.5", ' in noxfile.py.
2020-04-21 06:13:47,459 synthtool > Replaced 'ignore = .*' in .flake8.
Running session blacken
Creating virtual environment (virtualenv) using python3.6 in .nox/blacken
pip install black==19.3b0
black docs google tests noxfile.py setup.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/services/document_understanding_service/__init__.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/__init__.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai/__init__.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/services/document_understanding_service/transports/__init__.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/services/document_understanding_service/transports/base.py
reformatted /tmpfs/src/git/autosynth/working_repo/docs/conf.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/types/__init__.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/services/document_understanding_service/transports/grpc.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/services/document_understanding_service/client.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/types/geometry.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/types/document_understanding.py
reformatted /tmpfs/src/git/autosynth/working_repo/noxfile.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/documentai_v1beta2/types/document.py
reformatted /tmpfs/src/git/autosynth/working_repo/tests/unit/documentai_v1beta2/test_document_understanding_service.py
All done! ✨ 🍰 ✨
14 files reformatted, 2 files left unchanged.
Session blacken was successful.
2020-04-21 06:13:50,537 synthtool > Wrote metadata to synth.metadata.
```
</details>