Give it time, Go is still pretty new and requires reinventing all those wheels and flexibility-allowances. It's already visible in some areas though - e.g. look at the hoops you have to code through to allow decent unit testing of controller-style code. Anything of interest has to be exported and injected, or you simply can't do it. Even Java's significantly better here with its runtime manipulation.

In Java it is string.endsWith(...), not much different.

Ok bad example but you get the idea.