title: TableView Collapse/Expand with sections
body: <p>Question related to UITableView collapse and Expand mode with dynamic sections. We got the requirement of showing the number of cells which has the collapse and expand option and once user expand the cell which will be having the list of sections and cells.
  For more info I am attaching the screenshot, and please suggest me the best approach.</p>
  
  <p><a href="https://i.stack.imgur.com/RIy3u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RIy3u.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/AqODc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AqODc.png" alt="enter image description here"></a></p>