src/main/java/com/googlecode/objectify/impl/Path.java
public String toPathString() {
		if (this == ROOT) {
			return "";
		} else {
			StringBuilder builder = new StringBuilder();
			toPathString(builder);
			return builder.toString();
		}
	}
public String toPathString() {
		if (this == ROOT) {
			return "";
		} else {
			StringBuilder builder = new StringBuilder();
			toPathString(builder);
			return builder.toString();
		}
	}
Create the full x.y.z string