title: How to mock a javax.mail.Session
body: <p>i need to mock a javax.mail.Session object in my unit tests.
  The class javax.mail.Session is marked final so Mockito is not able to create a mock. Does anyone have an idea how to fix this?</p>
  
  <p>Edit:
  My test is an Arquillian test and has already an annotation @RunWith(Arquillian.class). Therefore powermock is not an option.</p>