* 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:
The Green Lantern Corps discovers that fellow Lanterns Sodam and Arisia have been captured by Mongul and subjected to the dreaded Black Mercy plant, which drags their deadliest fears into the light! And they're all about to learn a horrific secret behind the Black Mercy!