default String name() {
		final var element = path().element();
		return element != null ? element.toString() :  "";
	}
The name of {@code this} property, which is the name of the head path
element. If the path is empty, an empty string is returned.

@return the node name
jenetics.incubator/src/main/java/io/jenetics/incubator/beans/PathValue.java