def outgoing_manipulators(self):
        """**DEPRECATED**: All outgoing SON manipulators.

        .. versionchanged:: 3.5
          Deprecated.

        .. versionadded:: 2.0
        """
        warnings.warn("Database.outgoing_manipulators() is deprecated",
                      DeprecationWarning, stacklevel=2)

        return [manipulator.__class__.__name__
                for manipulator in self.__outgoing_manipulators]