pub unsafe extern "C" fn fy_document_register_meta(
fyd: *mut fy_document,
clear_fn: fy_node_meta_clear_fn,
user: *mut c_void,
) -> c_intpub unsafe extern "C" fn fy_document_register_meta(
fyd: *mut fy_document,
clear_fn: fy_node_meta_clear_fn,
user: *mut c_void,
) -> c_int