* 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:
Morgana and her Black Knights will stop at nothing to thwart Merlin and obtain the Stone of Giramphiel. With Merlin out of the picture, the only person who can stop Morgana is a young MIT professor -- Simon Ambrose. But Simon is a scientist and a man of reason.