title: Remove all Navigation Backstacks
body: <p>I'm using new jetpack navigation library. Here I have 3 fragments A, B &amp; C. A is my main fragment. From A fragment navigate to B fragment(A->B). From B to C(B->C). C->A then A->C->B->A->B like this. From whichever fragment I navigate if I press the system back button then I should navigate to A fragment Without having any backstacks pending.   </p>