            # model of this chat storage #


#Before
    # list= [  dictionary = {  'key':'value','new_list(as key)':'[]' }  ]
    # example according to project  friends=[new friend={'key':'value','chat':'[]'}]
 #After
       # list=[instance of Spy class(chat list as an parameter of spy class which stores instance of chat class ) ]
       #example acc. to project  friends=[new friend(chat[] list which contains object of Chat class)]