static <T0, T1, T2> TupleGetter1<Tuple3OfNullables<T0, T1, T2>, T1> getterOrNull1() {
        return Tuple3OfNullables::getOrNull1;
    }
Returns a {@link TupleGetter getter} for the 1st element in the {@code
Tuple}.

@return     the element at the 1st position
@param <T0> the 0th element type
@param <T1> the 1st element type
@param <T2> the 2nd element type
common-parent/tuple/src/main/java/com/speedment/common/tuple/nullable/Tuple3OfNullables.java