title: pop specific fragment from stack and remove others
body: <p>how I can pop specific fragment from stack and remove others from a fragment?
  for example these are my fragments and I'm in E right know.</p>
  
  <p>A-> B -> C -> D ->E</p>
  
  <p>wanna back from E to B and Clear C and D.
  How I can do this?</p>