@java.lang.Override
    public com.google.cloud.visionai.v1.NormalizedPolygonOrBuilder getActiveZoneOrBuilder() {
      if ((annotationPayloadCase_ == 5) && (activeZoneBuilder_ != null)) {
        return activeZoneBuilder_.getMessageOrBuilder();
      } else {
        if (annotationPayloadCase_ == 5) {
          return (com.google.cloud.visionai.v1.NormalizedPolygon) annotationPayload_;
        }
        return com.google.cloud.visionai.v1.NormalizedPolygon.getDefaultInstance();
      }
    }
<pre>
Annotation for type ACTIVE_ZONE
</pre>

<code>.google.cloud.visionai.v1.NormalizedPolygon active_zone = 5;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamAnnotation.java