ABPersonViewController class (whose instances are known as person view controllers) implements the view used to display a person record (
ABPersonViewController class does not support subclassing.
Responding to View Controller Interactions
Displaying Person Properties
var shouldShowLinkedPeople: Bool
Indicates whether the person view should display data from person records that are linked with the person record being displayed.
Configuring Person Views
var allowsActions: Bool
Specifies whether the to display buttons for actions such as sending a text message or initiating a FaceTime call.
ABUnknownPersonViewController class (whose instances are known as unknown-person view controllers) implements a view controller used to create a person record from a set of person properties.