const go/ast.Fun

4 uses

	go/ast (current package)
		scope.go#L146: 	Fun                // function or method
		scope.go#L156: 	Fun: "func",

	go/parser
		resolver.go#L301: 		r.walkFieldList(n.Methods, ast.Fun)
		resolver.go#L501: 			r.declare(n, nil, r.pkgScope, ast.Fun, n.Name)