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=== C# Example ===
'''Example 1''' - This code can be found at [http://www.c-sharpcorner.com/UploadFile/rmcochran/chain_of_command01172007143425PM/chain_of_command.aspx link www.c-sharpcorner.com]
Our command will be a PhoneCall class with one method "Converse()" which is our command.
