EventManagedObject.swift

@objc(EventManagedObject)
public class EventManagedObject: NSManagedObject, ManagedObjectConvertible {
    typealias T = Event

    func from(object: Event) {
        title = object.title
        date = object.date
    }

    func toObject() -> Event {
        return Event(
            title: title ?? "",
            lastDate: date,
            identifier: identifier
        )
    }
}