* 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:
Dick Grayson has been fired from being Robin and has struck out on his own, directionless. But Dick's about to receive a visit from Deadman! And what connection does the body-hopping hero have to the circus where Dick grew up? "Nightwing: Year One" part 3.