* 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:
“KILL YOUR DARLINGS” part three! Amanda Waller’s gone off the reservation! She’s ordered Task Force X to go full-on super-villain and take down the Justice League! No, not that one—they tried that before! This time she wants Batman’s new Justice League of America driven before her—dead or alive—and the Suicide Squad is happy to oblige.