@abc.abstractmethod<EOL><INDENT>def is_demographic(self):<DEDENT>
return<EOL>
Tests if this resource is a demographic.

        A resource that is a demographic can be used in the demographic
        service and the group sessions.

        :return: ``true`` if this resource is a demographic, ``false`` otherwise
        :rtype: ``boolean``


        *compliance: mandatory -- This method must be implemented.*