FactType
.username
.email
.phone
.other(Int)
Fact
type: Int
type: FactType
fact: String
value: String
[Fact]
func get(_ type: FactType) -> Fact?
func set(_ type: FactType, _ value: String?)
Contact
func getFact(_ type: FactType) throws -> Fact?
mutating func setFact(_ type: FactType, _ value: String?) throws
