Given the code:

type HandlerFunc func(ResponseWriter, *Request)

I would like to see an expansion setting in vscode-go for expanding http.HandlerFunc into one of the following (I'm impartial on which is used):

http.HandlerFunc(func(arg1 http.ResponseWriter, arg2 *http.Request) {
	
})

or without the http.HandlerFunc prefix...

func(arg1 http.ResponseWriter, arg2 *http.Request) {
	
}

Ideally the cursors would be at each arg, and then inside the function like so:

func(${1:"arg1 http.ResponseWriter"}, ${2:"arg2 *http.Request"}) {
	$3
}

gocode returns enough information to do this, and it was done in Atom's Go package here: joefitzgerald/go-plus#719

I'm willing to help with this, but have no experience working on extensions for vscode so I'll have to find some time and figure the basics out. I suspect the actual PR will be fairly small once I learn how to get going.

Any suggestions on how to start developing the vscode-go extension are appreciated.