docs: protected void runAnimators() {
          if (DBG) {
              Log.d(LOG_TAG, "runAnimators() on " + this);
          }
          start();
          ArrayMap<Animator, AnimationInfo> runningAnimators = getRunningAnimators();
          // Now start every Animator that was previously created for this transition
          for (Animator anim : mAnimators) {
              if (DBG) {
                  Log.d(LOG_TAG, "  anim: " + anim);
              }
              if (runningAnimators.containsKey(anim)) {
                  start();
                  runAnimator(anim, runningAnimators);
              }
          }
          mAnimators.clear();
          end();
      }