* 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:
When Sophie Bangs began researching a fabled warrior named Promethea, she expected a high grade on her report--NOT to assume her mantle, and become the living avatar of Imagination. Enjoy their adventures in real life and the higher realms in this tour-de-force explanation of magic and mysticism!