title: IntelliJ IDE disable 'is never used' inspection
body: <p>I extends <code>MessageCracker</code> Class and override methods(Handlers)</p>
  
  <pre><code>public void onMessage(ExecutionReport execRep, SessionID sessionID)
  ...
  public void onMessage(BusinessMessageReject message, SessionID sessionID)
  ...
  public void onMessage(Quote quote, SessionID sessionID)
  </code></pre>
  
  <p>each method catch messages extend <code>Message</code> - ExecutionReport, BusinessMessageReject, Quote etc.</p>
  
  <p>All work fine but IntellijIDE say on this methods - 
  <code>Method 'onMessage(quickfix.fix44.Quote, quickfix.SessionID)' is never used</code></p>
  
  <p>How can I fix it?</p>