title: how to change UISearchBar from round to rectangle?
body: <p>i will like to know how do i need to change a UISearchBar from the default round curve to a rectangle.</p>
  
  <p><img src="https://i.stack.imgur.com/LHSEJ.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/cXWZ6.png" alt="enter image description here"></p>