@java.lang.Override
      public com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystemOrBuilder
          getPosixDataSinkOrBuilder() {
        if ((dataSinkCase_ == 13) && (posixDataSinkBuilder_ != null)) {
          return posixDataSinkBuilder_.getMessageOrBuilder();
        } else {
          if (dataSinkCase_ == 13) {
            return (com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystem) dataSink_;
          }
          return com.google.storagetransfer.v1.proto.TransferTypes.PosixFilesystem
              .getDefaultInstance();
        }
      }
<pre>
A POSIX Filesystem data sink.
</pre>

<code>.google.storagetransfer.v1.PosixFilesystem posix_data_sink = 13;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java