What's wrong with the following function call?
request, err := http.NewRequest(http.MethodGet, "https://www.google.com", nil)
Passing an explicit nil to a function is a design smell. But at this point, any change to that function signature
would break the Go compatability promise.
So, herein I present an approach (based on Dave Cheney's excellent "Functional Options for Friendly APIs") to library design that follows the open-closed principle:
"Modules should be closed for modifification, open for extension."
Enjoy!