public com.google.cloud.visionai.v1.NormalizedPolygon.Builder getActiveZoneBuilder() {
      return getActiveZoneFieldBuilder().getBuilder();
    }
<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