public final <U8> Tuple16<T1, T2, T3, T4, T5, T6, T7, U8, T9, T10, T11, T12, T13, T14, T15, T16> map8(Function<? super T8, ? extends U8> function) {
        return Tuple.tuple(v1, v2, v3, v4, v5, v6, v7, function.apply(v8), v9, v10, v11, v12, v13, v14, v15, v16);
    }
Apply attribute 8 as argument to a function and return a new tuple with the substituted argument.
jOOL-java-8/src/main/java/org/jooq/lambda/tuple/Tuple16.java