title: Assignment of property if not null, possible with null-coalecing?
body: <p>I'm trying to do smth like</p>
  <p>Im trying to assign property on an object if this object is not null.
  but standard form of non-null invocation does not work for assignment like this</p>
  <pre><code>socket?.Blocking = false
  </code></pre>
  <p>what I'm trying to do is shorten this if possible:</p>
  <pre><code>if(socket != null) socket.Blocking = false
  </code></pre>