arg_ty_info.requires_clone = False
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty_info, False, None, is_free, True, True)
assert argument_conversion_info.nullable
arg_ty_info.requires_clone = False
argument_conversion_info = type_mapping_generator.map_type_with_info(arg_ty_info, False, None, is_free, True, True)
assert argument_conversion_info.nullable