Function luaL_setmetatable

ThirdParty/lua/lua/lauxlib.c:301–304

LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) {
  luaL_getmetatable(L, tname);
  lua_setmetatable(L, -2);
}


LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) {