The Xrm.Page.data.refresh method

CRM 2013 introduced new client APIs, one is the Xrm.Page.data.refresh method.
The MSDN definition is:
Asynchronously refreshes and optionally saves all the data of the form without reloading the page.

Xrm.Page.data.refresh(save).then(successCallback, errorCallback);

Why we leverage on this method?
The obvious reason is that we want the actual data displayed on the form, the inner reason is due to the Dynamics CRM platform, a record can be updated in several ways including workflows or plugins operating server-side.
Most of the server-side events don't refresh the UI, but with the Xrm.Page.data.refresh method we can manually force the page to display the current values.

If we want a simple refresh we can just write:

Xrm.Page.data.refresh(false);

A small advice will appear during the operation