@abc.abstractmethod<EOL><INDENT>def set_spatial_unit_value(self, value):<DEDENT>
pass<EOL>
Sets a spatial unit value.

        :param value: the new spatial unit value
        :type value: ``osid.mapping.SpatialUnit``
        :raise: ``IllegalState`` -- ``Parameter.getSyntax() != SPATIALUNIT``
        :raise: ``InvalidArgument`` -- ``value`` is invalid
        :raise: ``NoAccess`` -- ``value`` cannot be modified

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