* 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! The greatest hero the world has ever known began his journey in a rocket from a doomed planet as the baby Kal-El. Granted extraordinary powers thanks to Earth's yellow sun, the sole survivor of Krypton uses his abilities to protect his adopted homeworld from any threat in a never-ending quest against evil!