PTToolManagerAnnotationWillFlattenNotification
extern const NSNotificationName _Nonnull PTToolManagerAnnotationWillFlattenNotification
Posted when an annotation will be flattened.
The notification object is the tool manager that posted the notification. The userInfo dictionary
contains entries for the PTToolManagerAnnotationUserInfoKey and PTToolManagerPageNumberUserInfoKey
keys.
PTToolManagerAnnotationWillFlattenNotification Constant Reference