* 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:
A small black sphere contains all the magic that exists past, present, and future. Without it, two worlds would not survive. The sphere has been protected for centuries by a spell that was believed unbreakable. Asa Stonethrow, a common man in the world of magic, discovers the spell has been breached and a small chip of the black sphere has been stolen!