Public Sub Unsubscribe
     (Of TEventType As DelegateEventBase,
     TPayload)( _
   ByVal action As Action(Of TPayload) _
) 

Dim instance As EventAggregator
Dim action As Action(Of TPayload)
 
instance.Unsubscribe(Of TEventType, TPayload)(action)

public void Unsubscribe<TEventType,TPayload>( 
   Action<TPayload> action
)where TEventType: DelegateEventBase

public procedure Unsubscribe( 
    action: Action
); 

public function Unsubscribe( 
   action : Action
);

public: void Unsubscribe<TEventType,TPayload>( 
   Action<TPayload*>* action
) where TEventType: DelegateEventBase

public:
void Unsubscribegeneric<typename TEventType>
generic<typename TPayload>
( 
   Action<TPayload^>^ action
) where TEventType: DelegateEventBase