* 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:
Slacker genius Dr. David Loren used to worry about the deadly consequences of his creations from the safety of his laboratory... but not anymore! Deployed to Taiwan to oversee a field test gone awry, will having a SEAL Team as his bodyguards be enough to ensure that David returns home outside of a body bag?