* 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:
Life in the '90s proves trying for Brian, the '50s architect whose path has crossed with that of Mad Hettie. But Hettie isn't around to help Brian adjust; she's busy in the past, taking care of unfinished business with Lady Johanna Constantine. "The Lost Boy" part 2.