title: Cast PropertyInfo to Collection
body: <p>How do I cast a collection property in order to manage it? Please, take a look the attached image. I need to get the collection by it's name, and then work with this collection to add, remove, etc.</p>
  
  <p><a href="https://i.stack.imgur.com/jbvPn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jbvPn.png" alt="enter image description here"></a></p>