chore: Add region tags for Transfer Manager samples (#1110)

Author: andrewsg

samples/snippets/storage_transfer_manager_download_all_blobs.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+# [START storage_transfer_manager_download_all_blobs]
 def download_all_blobs_with_transfer_manager(
  bucket_name, destination_directory="", processes=8
 ):
@@ -62,3 +62,4 @@ def download_all_blobs_with_transfer_manager(
  print("Failed to download {} due to exception: {}".format(name, result))
  else:
  print("Downloaded {} to {}.".format(name, destination_directory + name))
+# [END storage_transfer_manager_download_all_blobs]

samples/snippets/storage_transfer_manager_download_chunks_concurrently.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+# [START storage_transfer_manager_download_chunks_concurrently]
 def download_chunks_concurrently(bucket_name, blob_name, filename, processes=8):
  """Download a single file in chunks, concurrently."""
 
@@ -40,3 +40,4 @@ def download_chunks_concurrently(bucket_name, blob_name, filename, processes=8):
  transfer_manager.download_chunks_concurrently(blob, filename, max_workers=processes)
 
  print("Downloaded {} to {}.".format(blob_name, filename))
+# [END storage_transfer_manager_download_chunks_concurrently]

samples/snippets/storage_transfer_manager_upload_directory.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+# [START storage_transfer_manager_upload_directory]
 def upload_directory_with_transfer_manager(bucket_name, source_directory, processes=8):
  """Upload every file in a directory, including all files in subdirectories.
 
@@ -76,3 +76,4 @@ def upload_directory_with_transfer_manager(bucket_name, source_directory, proces
  print("Failed to upload {} due to exception: {}".format(name, result))
  else:
  print("Uploaded {} to {}.".format(name, bucket.name))
+# [END storage_transfer_manager_upload_directory]

samples/snippets/storage_transfer_manager_upload_many_blobs.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+# [START storage_transfer_manager_upload_many_blobs]
 def upload_many_blobs_with_transfer_manager(
  bucket_name, filenames, source_directory="", processes=8
 ):
@@ -63,3 +63,4 @@ def upload_many_blobs_with_transfer_manager(
  print("Failed to upload {} due to exception: {}".format(name, result))
  else:
  print("Uploaded {} to {}.".format(name, bucket.name))
+# [END storage_transfer_manager_upload_many_blobs]