public Builder addLandmarks(com.google.cloud.vision.v1.FaceAnnotation.Landmark value) {
      if (landmarksBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureLandmarksIsMutable();
        landmarks_.add(value);
        onChanged();
      } else {
        landmarksBuilder_.addMessage(value);
      }
      return this;
    }
<pre>
Detected face landmarks.
</pre>

<code>repeated .google.cloud.vision.v1.FaceAnnotation.Landmark landmarks = 3;</code>
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/FaceAnnotation.java