title: List<T> without Where in the intellisense
body: <p>I don't understand why sometime I can't perform a <code>.where()</code> on a generic list. Most of the time it's shown in the intellisense, but sometimes it's not.</p>
  
  <p>Is it related to the fact that the list is a parameter? Or is it related to resharper's intellisense?</p>
  
  <p><img src="https://i.stack.imgur.com/mtyZT.png" alt="enter image description here"></p>