Me : Hey I have to implement this feature but I have no idea how to do it

Co-worker : oh we have examples here on those projects

** Later, after searhcing through code **
Me : Hey, so I based my code on yours for that project, but there's a thing I don't understand with your implementation.

Co-worker : Oh, that's because it's not the same context, please use that documentation.

Me : *Seeing that the documentation did absolutely different way to implement the feature, and so I lost my time trying to understand something I won't use because misled*... okay thanks.