How to check if MotionScene is at transition "start" or "end"?

I have a MotionLayout with a MotionScene, and I want to do an "if-check" (in Kotlin) that checks if the scene is currently at transition "start" or "end".

Does anyone know how to do this?

Here is my transition "start" and "end" in the MotionScene:

<Transition
     motion:constraintSetEnd="@+id/end"
     motion:constraintSetStart="@+id/start"
     motion:duration="1000"> 

You can play with TransitionListener callbacks as your need

motionLayout.setTransitionListener(new MotionLayout.TransitionListener() {
        @Override
        public void onTransitionStarted(MotionLayout motionLayout, int i, int i1) {
            Log.i(TAG, "onTransitionStarted: ");
        }

        @Override
        public void onTransitionChange(MotionLayout motionLayout, int i, int i1, float v) {
            if (isViewVisible) {
                hideViews();
            }
        }
        @Override
        public void onTransitionCompleted(MotionLayout motionLayout, int i) {
            if (i != R.layout.start) {
                showViews();
            }
        }


        @Override
        public void onTransitionTrigger(MotionLayout motionLayout, int i, boolean b, float v) {


        }
    });

you can also use motionLayout.getProgress()
inside onTransitionChange which called whenever a drawer's position changes.

like so

 public void onTransitionChange(MotionLayout motionLayout, int i, boolean b, float v) {
            if (motionLayout.getProgress() == 0.0) {
              // this is start 
            } else {
                // this is end 
            }
        }