def enableStopSize(self, size=0):
        """
        This public method enables the stop size
        criteria. If the number of bytes thus far
        calculated exceeds this size, the search is
        stopped.

        The default value is zero bytes and means anything
        greater will end the search.
        """

        if type(size) != int:
            print "Error: size must be an integer"
            _sys.exit(1)
        
        self._stopSize = size

        This public method enables the stop size
        criteria. If the number of bytes thus far
        calculated exceeds this size, the search is
        stopped.

        The default value is zero bytes and means anything
        greater will end the search.
        
recipes/Python/572179_Quickly_calculate_folder_or_volume/recipe-572179.py