@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(gcsUri_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, gcsUri_);
      }
      getUnknownFields().writeTo(output);
    }
<pre>
Cloud storage uri.
</pre>

<code>string gcs_uri = 1;</code>

@return The bytes for gcsUri.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetSource.java