java - Mockito error : "Wanted but not invoked:.. However, there were other interactions with this mock"

Im getting the following error, when I try to mock overloaded methods by passing casted values .

For example in order to mock
ABCClass.logWarn(Logger log,String , String description, Throwable e);

Im doing

`ABCClass.logWarn(null,WarningString, description, (Throwable)null); 
...\\ The rest of the methods are standard...

verify(event).setStatus((Throwable)null);//**Line 76**

But when I run my test cases Im getting the following error

  ABCClassTest.testLogWarn:76 
    Wanted but not invoked:
    MockEvent.setStatus(null);
    -> at com.path.ABCClassTest.testLogWarn(ABCClassTest.java:76)


However, there were other interactions with this mock:.....

Why is setStatus(null) expected to be called, even after specifically calling the
setStatus((Throwable)null);?

Additional Detail

Definition of logWarn

private static void logWarn(String eventType, String eventName, String errMsg, Throwable e) {

        AnEvent event = AnEventFactory.create(eventType);
        event.setName(eventName);
        if(e!=null)
            event.setStatus(e);//so this is never called if the throwable is null.
    //How do I modify the verify behavior?
        /*
                   Bleh */



        event.completed();
    }

Answer

Being new to Mockito I didnt quite realise what I was looking for. But this is precisely what I wanted.
Hope this helps anyone else stuck with a similar problem.