public Builder removeLandmarks(int index) {
      if (landmarksBuilder_ == null) {
        ensureLandmarksIsMutable();
        landmarks_.remove(index);
        onChanged();
      } else {
        landmarksBuilder_.remove(index);
      }
      return this;
    }
<pre>
Optional. The detected landmarks.
</pre>

<code>
repeated .google.cloud.videointelligence.v1p3beta1.DetectedLandmark landmarks = 4 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/TimestampedObject.java