BigQuery Storage: blacken new quickstart snippet.

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Here's the log from Synthtool:

synthtool > Executing /tmpfs/src/git/autosynth/working_repo/bigquery_storage/synth.py. synthtool > Ensuring dependencies. synthtool > Pulling artman image. latest: Pulling from googleapis/artman Digest: sha256:d6c8ced606eb49973ca95d2af7c55a681acc042db0f87d135968349e7bf6dd80 Status: Image is up to date for googleapis/artman:latest synthtool > Cloning googleapis. synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1beta1.yaml. synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1. synthtool > Placed proto files into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto. synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py. synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2_grpc.py. synthtool > Replaced 'google-cloud-bigquerystorage' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'import google.api_core.gapic_v1.method\n' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'from google.cloud import bigquery_storage_v1beta1' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py. synthtool > Replaced 'bigquery_storage_v1beta1.BigQueryStorageClient' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py. synthtool > Replaced 'if transport:' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'to_grpc_metadata\\(\\n' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'metadata.append\\(routing_metadata\\)' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'if channel is not None and credentials is not None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. synthtool > Replaced 'if channel is None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. synthtool > Replaced 'google.api_core.grpc_helpers.create_channel\\(' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. Running session blacken Creating virtualenv using python3.6 in /tmpfs/src/git/autosynth/working_repo/bigquery_storage/.nox/blacken pip install --upgrade black black google tests docs reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/__init__.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/__init__.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/docs/quickstart_test.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/docs/quickstart.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/enums.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client_config.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/avro_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/read_options_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/read_options_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/avro_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/table_reference_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/storage_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/types.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/table_reference_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py All done! ✨ 🍰 ✨ 19 files reformatted, 10 files left unchanged. Session blacken was successful. synthtool > Cleaned up 0 temporary directories. synthtool > Wrote metadata to synth.metadata.