57     def __call__(cls, *lstArgs, **dictArgs):  argument
63     def getInstance(cls, *lstArgs):  argument
69         if cls._isInstantiated():
73             if len(lstArgs) != cls._getConstructionArgCountNotCountingSelf():
75             instance = cls.__new__(cls)
77             cls.cInstance = instance
78         return cls.cInstance
81     def _isInstantiated(cls):  argument
82         return hasattr(cls, 'cInstance')
85     def _getConstructionArgCountNotCountingSelf(cls):  argument
86         return cls.__init__.im_func.func_code.co_argcount - 1
89     def _forgetClassInstanceReferenceForTesting(cls):  argument
99             delattr(cls,'cInstance')
103             for baseClass in cls.__bases__: