* 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:
Daredevil! Luke Cage! Jessica Jones! Iron Fist! Individually, these four heroes have been on the front lines of the battle to keep the streets of the city safe and secure! But now, with a deadly enemy from the dim past making a major move to unite the underworld, they will need to become more — they will need to become DEFENDERS!