Function person_json 

pub(crate) fn person_json(key: &str) -> String

A contact’s list, for its card (“Their list”; key: its file or UID): {who (one of the five states), from (what decided), choice (the card’s own list, “” when none), said (a sentence), own [lines: an address or a number of theirs with a list of its own, which comes before the card’s], choices [{value, label}]: “As their categories say” and the four lists}. “null” for a card no address book holds.