unix_s_socketpair  543 ext/socket/unixsocket.c     rb_define_singleton_method(rb_cUNIXSocket, "socketpair", unix_s_socketpair, -1);
unix_s_socketpair  544 ext/socket/unixsocket.c     rb_define_singleton_method(rb_cUNIXSocket, "pair", unix_s_socketpair, -1);