pub unsafe extern "C" fn dds_register_instance(
writer: dds_entity_t,
handle: *mut dds_instance_handle_t,
data: *const c_void,
) -> dds_return_tpub unsafe extern "C" fn dds_register_instance(
writer: dds_entity_t,
handle: *mut dds_instance_handle_t,
data: *const c_void,
) -> dds_return_t