@abc.abstractmethod<EOL><INDENT>def set_display_label(self, display_label):<DEDENT>
pass<EOL>
Seta a display label.

        :param display_label: the new display label
        :type display_label: ``string``
        :raise: ``InvalidArgument`` -- ``display_label`` is invalid
        :raise: ``NoAccess`` -- ``display_label`` cannot be modified
        :raise: ``NullArgument`` -- ``display_label`` is ``null``

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