(self, value=None)
Set the encapsulated value.

        :param value: the encapsulated value or nothing
        :type value: any object or :class:`None`
        :raise: an exception if set is called multiple times
Set the encapsulated value.
Set the encapsulated value .
def set(self, value=None):
        """
        Set the encapsulated value.

        :param value: the encapsulated value or nothing
        :type value: any object or :class:`None`
        :raise: an exception if set is called multiple times
        """
        raise NotImplementedError
def set ( self , value = None ) : raise NotImplementedError