(self)
Return a cloned (deep) copy of self.

        This must be implemented by the concrete subclass.
Return a cloned (deep) copy of self.
Return a cloned ( deep ) copy of self .
def clone(self):
        """
        Return a cloned (deep) copy of self.

        This must be implemented by the concrete subclass.
        """
        raise NotImplementedError
def clone ( self ) : raise NotImplementedError