* 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 a teenage JEAN GREY traveled through time and arrived in the present, she learned the terrible fate that befell her predecessor: Possessed by a cosmic entity called the Phoenix, Jean was trapped in an endless cycle of life and death. Determined to escape that future, Jean set out to write her own destiny. But now, she's visited by a premonition that the Phoenix is coming for her…and in this new ongoing series by DENNIS HOPELESS (ALL-NEW X-MEN, SPIDER-WOMAN, X-MEN: SEASON ONE) and VICTOR IBANEZ (EXTRAORDINARY X-MEN, STORM), she's going to fight tooth and nail to escape becoming its next victim!