public Builder addPersonDetectionAnnotations(
        int index,
        com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation.Builder
            builderForValue) {
      if (personDetectionAnnotationsBuilder_ == null) {
        ensurePersonDetectionAnnotationsIsMutable();
        personDetectionAnnotations_.add(index, builderForValue.build());
        onChanged();
      } else {
        personDetectionAnnotationsBuilder_.addMessage(index, builderForValue.build());
      }
      return this;
    }
<pre>
Person detection annotations.
</pre>

<code>
repeated .google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation person_detection_annotations = 20;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/VideoAnnotationResults.java