def root_namespace(self, value):
        """
        Setter for **self.__root_namespace** attribute.

        :param value: Attribute value.
        :type value: unicode
        """

        if value is not None:
            assert type(value) is unicode, "'{0}' attribute: '{1}' type is not 'unicode'!".format(
                "root_namespace", value)
        self.__root_namespace = value
Setter for **self.__root_namespace** attribute.

        :param value: Attribute value.
        :type value: unicode