One, reading code in general is a good thing to do when you're new, and it's a skill that should be built up in general.
Two, you might actually find what you're looking for, and answer your own question! It's a nice little boost to realize you're getting self-sufficient.
Three, you'll have a lot more context for me, which will make it easier for me to give you the answer. "Hey, how come this function doesn't return what I expected" is a much harder question to answer than "This function says it returns a list of items a user has accessed in a given workspace, but it's returning an empty list; I've checked my local database and it has a good set of seed data I think, and from looking at the function there's nothing obviously filtering out users, so what's going on?"