An object with the following properties:
The Client-side data cache item being loaded.
false if the data has not been fetched from the server. true if the data has already been fetched from the server.
If hasBeenFetched is false, a callback to the server will be made to fetch the data. Otherwise, the data will be read from where it was stored.
The location where the item is stored. For example, "Local Storage".
Fires before an item in the Client-side data cache is read.