public final <U4> Tuple13<T1, T2, T3, U4, T5, T6, T7, T8, T9, T10, T11, T12, T13> map4(Function<? super T4, ? extends U4> function) {
        return Tuple.tuple(v1, v2, v3, function.apply(v4), v5, v6, v7, v8, v9, v10, v11, v12, v13);
    }
Apply attribute 4 as argument to a function and return a new tuple with the substituted argument.
jOOL/src/main/java/org/jooq/lambda/tuple/Tuple13.java