* Client-Side Metrics Include
* Wiki: https://tiny.amazon.com/cpso0wg6
* Needs to be included at the top of pages because it tracks latency--
* ue_t0 needs to be as close to body load as possible.
* - ue.tag maps to URLType dimension of OnlineQueryLog in PMET. Because we cannot add
* custome data to other dimensions in PMET through CSM, we are replicating it thrice to
* cover each store, page type, and the intersections of the two.
* - Whitelists are listed in the usage guide:
They say you can never go home again, but Mad Hettie reveals to Brian that he can return to his own time if he is brave enough to once more dare the realm of Faerie--but as Brian and Hettie discover, entering Faerie is one thing, and leaving it is quite another. "The Lost Boy" part 4.