def supports_spatial_unit_record_types_for_conversion(self, source_spatial_unit_record_type=None, target_spatial_unit_record_type=None):
Tests if a given spatial unit conversion is supported.

        arg:    source_spatial_unit_record_type (osid.type.Type): the
                type of the source spatial unit record
        arg:    target_spatial_unit_record_type (osid.type.Type): the
                type of the target spatial unit record
        return: (boolean) - ``true`` if the given source and target
                conversion is supported, ``false`` otherwise
        raise:  NullArgument - ``source_spatial_unit_record_type`` or
                ``target_spatial_unit_record_type`` is ``null``
        *compliance: mandatory -- This method must be implemented.*