One entry of the device's address book (MobileDeviceState.addressBook):
the fields the Android app's address_book/link sends, in the domain's
camelCase — the brick spells them to the wire's snake_case. The values are the
device's own fact: the library generates plausible entries from the device id
and keeps no recorded contact, so a caller that wants particular entries
declares its own device state (a snapshot), like every other device fact.
One entry of the device's address book (MobileDeviceState.addressBook): the fields the Android app's
address_book/linksends, in the domain's camelCase — the brick spells them to the wire's snake_case. The values are the device's own fact: the library generates plausible entries from the device id and keeps no recorded contact, so a caller that wants particular entries declares its own device state (a snapshot), like every other device fact.