@SuppressWarnings("unchecked")
    @Override
    public Optional<T3> get3() {
        return Optional.ofNullable((T3) values[3]);
    }
Constructs a {@link TupleOfNullables} of type {@link Tuple4OfNullables}.

@param e0 element 0
@param e1 element 1
@param e2 element 2
@param e3 element 3
common-parent/tuple/src/main/java/com/speedment/common/tuple/internal/nullable/Tuple4OfNullablesImpl.java