* 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:
WITNESS A MODERN HERO'S FALL FROM GRACE! The Cowl and Flyboy: renowned superhero and sidekick despite dopey names. They were famous, popular, and happy until the Cowl's assassination. Now, no one takes Flyboy seriously. Follow his trajectory from barely tolerated hero to figure of ridicule, and witness his slow descent into madness, darkness and crime.