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The Chain of Responsibility pattern uses a chain of objects to handle a request, which is typically an event. Objects in the chain forward the request along the chain until one of the objects handles the event. Processing stops after an event is handled.
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'''Purpose'''
Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle
the request. Chain the receiving objects and pass the request along the chain until an object handles it.
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'''UML Diagram'''
