pkh11

public func getParticipantsState(_ id: String, completion: @escaping (Bool) -> Void) {
        guard let myEmail = UserDefaults.standard.value(forKey: "email") as? String else {
            return
        }
        let currentEmail = DatabaseManager.safeEmail(emailAddress: myEmail)
        
        database.child("\(id)/participants").observeSingleEvent(of: .value) { snapshot in
            guard let values = snapshot.value as? [String:Bool] else {
                completion(false)
                return

pkh11

class WorkInfo: Object{

  @objc dynamic var title: String?
  @objc dynamic var content: String?
  let seq = RealmOptional<Int>()
  // ...
}