private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation,
            com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation.Builder,
            com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotationOrBuilder>
        getPersonDetectionAnnotationsFieldBuilder() {
      if (personDetectionAnnotationsBuilder_ == null) {
        personDetectionAnnotationsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation,
                com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotation.Builder,
                com.google.cloud.videointelligence.v1p3beta1.PersonDetectionAnnotationOrBuilder>(
                personDetectionAnnotations_,
                ((bitField0_ & 0x00004000) != 0),
                getParentForChildren(),
                isClean());
        personDetectionAnnotations_ = null;
      }
      return personDetectionAnnotationsBuilder_;
    }
<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