javascript protractor selenium selenium-webdriver

Locating parent elements with parentElementArrayFinder

There is a parentElementArrayFinder attribute available on an ElementFinder object which, from I understand, may return a parent element of the current:

var myElement = $(".myclass");
var parentElement = myElement.parentElementArrayFinder;

It is, though, not documented as a part of Protractor’s public API. Is parentElementArrayFinder a reliable and stable method to locate a parent element and would always return the same element as myElement.element(by.xpath(".."))?