type = lua_gettable(L, -2);
lua_ensure(type == LUA_TSTRING || type == LUA_TNUMBER,
"Attribute 'speed' must be specified for host and must either be a string (in the correct format; check documentation) or a number.");
type = lua_gettable(L, -2);
lua_ensure(type == LUA_TSTRING || type == LUA_TNUMBER,
"Attribute 'speed' must be specified for host and must either be a string (in the correct format; check documentation) or a number.");