One of my required features is seeing the method signature when my cursor is on the method name; I don't want to have to enter a command to see the signature. In sublime, the bottom bar will passively show me `func Unmarshal(data []byte, v interface{}) error` when I cursor over json.Unmarshal. I'd really like it if it also showed me the type of the variable I was cursored over, but I digress. Is this possible in your extension?