How to get OperationDescription from OperationContext on AfterReceiveRequest in WCF?

Question

In my implementation of IDispatchMessageInspector on the AfterReceiveRequest I want to check if an OperationBehavior is applied on the current operation being called. So I need to access OperationDescription of the operation that's about to get invoked?? Any direct way instead of having to compare the Action of the current operation with all the in the DispatchRuntime?

Thanks..