public void enableFeatureFlag(LottieFeatureFlag flag, boolean enable) {
    lottieDrawable.enableFeatureFlag(flag, enable);
  }
Enable the specified feature for this LottieView.
<p>
Features guarded by LottieFeatureFlags are experimental or only supported by a subset of API levels.
Please ensure that the animation supported by the enabled feature looks acceptable across all
targeted API levels.
lottie/src/main/java/com/airbnb/lottie/LottieAnimationView.java