code: public void stop()
      {
          if (!mIsRunning || (mAnimations.size() == 0))
          {
              return;
          }
          GVRAnimation anim = mAnimations.get(0);
          mIsRunning = false;
          anim.setOnFinish(null);
          for (int i = 0; i < mAnimations.size(); ++i)
          {
              anim = mAnimations.get(i);
              getGVRContext().getAnimationEngine().stop(anim);
          }
      }
docs: Stops all of the animations associated with this animator.
  @see GVRAnimator#start()
  @see GVRAnimationEngine#stop(GVRAnimation)