title: Reuse of fragment contains dialog with hardcoded id in elements
body: <p>I'm developing an application in Sapui5 and I have the need to be able to open fragment which contains dialog and inside i have a button with specific Id,
  after I close the fragment and try to open it again I get duplicate Id error.
  I can't use the most popular solution with the condition that if the fragment exists don't create it again because on the same element i need to be able to open two different fragmants (not on the same time)</p>
  
  <p>i tried destroy,destroyContent,delete,undefined and nothing works,
  eventually I ran on all the elements in the dialog and destroy them by Id,</p>
  
  <p>is there any other way to destroy the content of the dialog?</p>
  
  <p>thanks</p>