public void enableFeatureFlag(LottieFeatureFlag flag, boolean enable) {
    boolean changed = lottieFeatureFlags.enableFlag(flag, enable);
    if (composition != null && changed) {
      buildCompositionLayer();
    }
  }
Enable the specified feature for this drawable.
<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/LottieDrawable.java