title: Flutter How to set Title to Show Modal Bottom Sheet?
body: <p>Is there a possibility to set <strong>title</strong> and perhaps navigation back button on this showModalBottomSheet?</p>
  
  <p>I expect something like this...</p>
  
  <p><a href="https://i.stack.imgur.com/UUBfr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UUBfr.png" alt="enter image description here"></a></p>