Fields used to create a new contact via createContact.
All fields are optional except displayName. Phone/email/address type values follow the
same stable lowercase vocabulary as the read models (e.g. "mobile", "home", "work");
when type === "custom", set customLabel.
Fields used to create a new contact via createContact.
All fields are optional except
displayName. Phone/email/addresstypevalues follow the same stable lowercase vocabulary as the read models (e.g."mobile","home","work"); whentype === "custom", setcustomLabel.