@java.lang.Override
  public com.google.cloud.visionai.v1.NormalizedPolygon getActiveZone() {
    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>

@return The activeZone.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/StreamAnnotation.java