* 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:
Vince Morley is a man with big problems and a brain tumour like a baby's fist; living with one foot in a monstrous alternate world he calls Cancertown. When the lost and dispossessed of London start tripping over the same cracks in reality he spends his life avoiding, Morley realizes he must confront the residents of Cancertown - and risk finding his place among them.