@java.lang.Override
    public com.google.storagetransfer.v1.proto.TransferTypes.GcsData getGcsDataSource() {
      if (dataSourceCase_ == 1) {
        return (com.google.storagetransfer.v1.proto.TransferTypes.GcsData) dataSource_;
      }
      return com.google.storagetransfer.v1.proto.TransferTypes.GcsData.getDefaultInstance();
    }
<pre>
The Cloud Storage bucket from which to replicate objects.
</pre>

<code>.google.storagetransfer.v1.GcsData gcs_data_source = 1;</code>

@return The gcsDataSource.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java