* 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:
"Pupaphobia" part 1! Everybody's got that one thing that just creeps them out beyond all reason. For Zatanna Zatara, it's puppets: "Creepy, horrible, soul-sucking puppets." But why is one of the most powerful sorcerers on Earth scared of little wooden men in cheap suits?