func go/parser.unparen

4 uses

	go/parser (current package)
		parser.go#L1378: 	switch unparen(x).(type) {
		parser.go#L1447: func unparen(x ast.Expr) ast.Expr {
		parser.go#L1449: 		x = unparen(p.X)
		parser.go#L1458: 	switch t := unparen(x).(type) {