t := reflect.TypeOf(val)
	if t.Name() != "" {
		return t.String()
	}
	return "(" + t.String() + ")"
}

// unmarshalInterface unmarshals a single XML element into val.
// start is the opening tag of the element.
func (d *Decoder) unmarshalInterface(val Unmarshaler, start *StartElement) error {
	// Record that decoder must stop at end tag corresponding to start.
	d.pushEOF()

	d.unmarshalDepth++