* 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:
Clark Kent's parents named him after the most famous superhero in comics--and because of it, he grew up constantly being made fun of. But when happens when Clark suddenly develops superpowers similar to those of Superman? Kurt Busiek and Stuart Immonen bring readers a Superman tale unlike any others!