title: Enterprise Architect - relation between observer and processed object
body: <p>I have quick and simple question about specific class diagram model issue.</p>
  
  <p>I have Observer and Observable classes and objects representing the notification (types of objects that are sent to the Observer) - see model below</p>
  
  <p><strong>ObjectType1</strong> and <strong>ObjectType2</strong> are classes whose instances are sent to the Observer as an argument of method <code>update(Observable o, Object arg)</code> by <strong>ObservableSubject</strong> instance.</p>
  
  <p><a href="https://i.stack.imgur.com/lVDUs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lVDUs.png" alt="enter image description here"></a></p>
  
  <p>My question is, how to model the relation between <strong>ObjectType1</strong>|<strong>ObjectType2</strong> and <strong>Observer</strong> class?</p>