* 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:
Superman is one of the mightiest heroes in the universe, but can even his great powers compare to the abilities of 500 ancient aliens? And, can the Man of Steel somehow find a way to defeat these new foes without hurting his friends, whose minds have been usurped by the aliens?