public com.google.cloud.videointelligence.v1.DetectedLandmark.Builder getLandmarksBuilder(
        int index) {
      return getLandmarksFieldBuilder().getBuilder(index);
    }
<pre>
Optional. The detected landmarks.
</pre>

<code>
repeated .google.cloud.videointelligence.v1.DetectedLandmark landmarks = 4 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/TimestampedObject.java