@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uri_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, uri_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Google Cloud Storage URI for the input file. This must only be a
Google Cloud Storage object. Wildcards are not currently supported.
</pre>

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

@return The bytes for uri.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/GcsSource.java