title: Custom layout for collection view in swift?
body: <p>I have 7 cells in one section in a UICollectionView.
  I have searched for hours but all I can find is information about CollectionFlow and Custom layouts with hundreds of cells. All I want is display 7 cells with different identifiers in a collection view using a layout like this image:</p>
  
  <p><img src="https://i.stack.imgur.com/nqciu.png" alt="enter image description here"></p>
  
  <p>How can I achieve this layout?</p>