Call this to instantiate an instance or retrieve the existing instance.
If the singleton requires args to be instantiated, include them the first
time you call getInstance.        

                                  :
        """
        Call this to instantiate an instance or retrieve the existing instance.
        If the singleton requires args to be instantiated, include them the first
        time you call getInstance.        
        """
        if cls._isInstantiated():
            if len(lstArgs) != 0:
                raise SingletonException, 'If no supplied args, singleton must already be instantiated, or __init__ must require no args'
        else:
            if len(lstArgs) != cls._getConstructionArgCountNotCountingSelf():  
                raise SingletonException, 'If the singleton requires __init__ args, supply them on first instantiation'
            instance = cls.__new__(cls)
            instance.__init__(*lstArgs)
            cls.cInstance = instance
        return cls.cInstance
    getInstance = classmethod(getInstance)