@utilities.arguments_not_none<EOL><INDENT>def get_spatial_unit_record_types_for_source(self, source_spatial_unit_record_type):<DEDENT>
raise errors.Unimplemented()<EOL>
Gets the list of target spatial unit types for a given source spatial unit type.

        arg:    source_spatial_unit_record_type (osid.type.Type): the
                type of the source spatial unit record
        return: (osid.type.TypeList) - the list of supported target
                spatial unit record types
        raise:  NullArgument - ``source_spatial_unit_record_type`` is
                ``null``
        *compliance: mandatory -- This method must be implemented.*