 
 extension Promise {
     public class func completed() -> Completable {
-        return Promise<Void>(())
+        return Completable(())
     }
 
     public var completable: Completable {

                    self.cancelled({ cancellationToken.cancel() }, on: Promise.queue)
                }
            }
        }
    }
}

        self.fulfilledObject = .failure(error)
    }
}

extension Promise where ValueType == Void {
    public func complete() {
        self.fulfill(with: .success(()))
    }
}


// fulfillment
extension Promise {
    
