Here are some photos of this plant taken from around the world over many years. It is actually quite a common plant, despite it having very ambiguous origins and identity. The fruit starts out red when young, turns green as it matures, and ripens yellow. It can be very tasty, but like I mentioned earlier, it seems to have great trouble filling out decent sized fruit in most situations, but I have seen and tasted really great fruit from it once before.
https://goo.gl/photos/gcqhg4gqmiqFGURz9