* 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:
In which we meet Clone Number Four - the epitome of everything good that Trevor is not. In which the mystery of an intergalactic murder conspiracy perpetrated by the dastardly Scarlet Empire thickens. In which Detective Trevor Carter of Earth visits a bulk discount therapist and learns about the combustibility of an entire species. In which Lieutenant Vorgas of the Shadarr demonstrates once and for all that he is an idiot of the highest order. And in which a lot of things explode. Not on purpose.