Great, that works! Code.fetch_docs(:'Elixir.Kernel') gives me structured data which I can work with. One more question, how do I specify a function? I have tried Code.fetch_docs(:'Elixir.Kernel.is_atom/1'), but I get {:error, :module_not_found}, same thing without the /1 part.
EDIT: Never mind, I need to look at the implementation of Ex.Introspection.h/1, not Ex.Introspection.h/1.
