var encoding/xml.marshalerType

3 uses

	encoding/xml (current package)
		marshal.go#L420: 	marshalerType     = reflect.TypeFor[Marshaler]()
		marshal.go#L453: 	if val.CanInterface() && typ.Implements(marshalerType) {
		marshal.go#L458: 		if pv.CanInterface() && pv.Type().Implements(marshalerType) {