## $**$Chain of Responsibility$**$

Ex:

Design and implement a chain of responsibility for a help desk ticketing system that allows different types of support requests to be handled by different support teams.

Your ticketing system should support several types of support requests, such as hardware issues, software issues, and network issues. Each support request should have a unique ID$,$ a description of the problem, and a priority level.

Your chain of responsibility should consist of several handlers, each responsible for handling support requests of a specific type. The handlers should be organized in a hierarchical order, such that a lower$-$level handler can pass a support request up to a higher$-$level handler if it cannot handle the request itself.

Here are some specific requirements for the assignment:

$1.$ Define the interface for the handler, which should include a method for handling a support request.

$2.$ Implement the chain of responsibility using the Chain of Responsibility pattern. You should create separate handlers for each type of support request, and organize them in a hierarchical order.

$3.$ Write test cases to verify that the chain of responsibility works correctly. Your tests should cover all the types of support requests provided by the system.

$4.$ Optionally, you can also add additional features to the ticketing system, such as the ability to assign support requests to specific team members or track the status of support requests.

$5.$ Finally, write a brief report on your implementation, explaining the design choices you made and how the Chain of Responsibility pattern simplified the implementation of the ticketing system.

This assignment will give you a basic understanding of how the Chain of Responsibility pattern can be used to handle requests in a hierarchical manner. Good luck!