@SuppressWarnings("unchecked")
    @Override
    public Optional<T2> get2() {
        return Optional.ofNullable((T2) values[2]);
    }
Constructs a {@link MutableTuple} of type {@link MutableTuple19}.
common-parent/tuple/src/main/java/com/speedment/common/tuple/internal/mutable/MutableTuple19Impl.java