diff --git a/.gitignore b/.gitignore
index 312d1f6..42b4389 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,3 +66,4 @@ fastlane/report.xml
 fastlane/Preview.html
 fastlane/screenshots/**/*.png
 fastlane/test_output
+.DS_Store
diff --git a/Example/AppDelegate.swift b/Example/AppDelegate.swift
index c7f6bae..898d9d9 100644
--- a/Example/AppDelegate.swift
+++ b/Example/AppDelegate.swift
@@ -19,9 +19,11 @@ class AppDelegate: PluggableApplicationDelegate {
             LoggerApplicationService()
         ]
     }
+}
 
-    override init() {
-        super.init()
+extension AppDelegate {
+    override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
         self.window = UIWindow(frame: UIScreen.main.bounds)
+        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
     }
 }
diff --git a/Sources/AppServicesManager+UNUserNotification.swift b/Sources/AppServicesManager+UNUserNotification.swift
index ef12feb..2b2576f 100644
--- a/Sources/AppServicesManager+UNUserNotification.swift
+++ b/Sources/AppServicesManager+UNUserNotification.swift
@@ -13,16 +13,30 @@ extension PluggableApplicationDelegate: UNUserNotificationCenterDelegate {
 
     @available(iOS 10.0, *)
     public func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
-        for service in _services {
-            service.userNotificationCenter?(center, willPresent: notification, withCompletionHandler: completionHandler)
-        }
+        apply({ (service, completion) -> Void? in
+            service.userNotificationCenter?(
+                center,
+                willPresent: notification,
+                withCompletionHandler: { opt in
+                    completion(opt)
+            })
+        }, completionHandler: { options in
+            completionHandler(UNNotificationPresentationOptions(options))
+        })
     }
 
     @available(iOS 10.0, *)
     public func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
-        for service in _services {
-            service.userNotificationCenter?(center, didReceive: response, withCompletionHandler: completionHandler)
-        }
+        apply({ (service, completion) -> Void? in
+            service.userNotificationCenter?(
+                center,
+                didReceive: response,
+                withCompletionHandler: {
+                    completion(())
+            })
+        }, completionHandler: { _ in
+            completionHandler()
+        })
     }
 
 
diff --git a/Sources/AppServicesManager.swift b/Sources/AppServicesManager.swift
index fd2b21d..58378f0 100644
--- a/Sources/AppServicesManager.swift
+++ b/Sources/AppServicesManager.swift
@@ -29,6 +29,30 @@ open class PluggableApplicationDelegate: UIResponder, UIApplicationDelegate {
     lazy var _services: [ApplicationService] = {
         return self.services
     }()
+    
+    lazy var _methodRespondsCache: [String: Bool] = {
+        print(NSDate())
+        func generateProtocolMethods(_ protocol: Protocol, methodPrifix: String) -> [String] {
+            var count: UInt32 = 0
+            guard let list = protocol_copyMethodDescriptionList(`protocol`, false, true, &count) else { return [] }
+            return (0..<count)
+                .map({ list[Int($0)] })
+                .compactMap({ $0.name })
+                .map({ NSStringFromSelector($0) })
+                .filter({ $0.hasPrefix(methodPrifix) })
+        }
+        var methods = generateProtocolMethods(UIApplicationDelegate.self, methodPrifix: "application")
+        if #available(iOS 10.0, *) {
+            methods.append(contentsOf: generateProtocolMethods(UNUserNotificationCenterDelegate.self, methodPrifix: "userNotificationCenter"))
+        }
+        let result = methods.reduce([String: Bool]()) { (res, selector) in
+            var res = res
+            res[selector] = _services.contains(where: { $0.responds(to: Selector.init(selector)) })
+            return res
+        }
+        print(NSDate())
+        return result
+    }()
 
     @discardableResult
     internal func apply<T, S>(_ work: (ApplicationService, @escaping (T) -> Void) -> S?, completionHandler: @escaping ([T]) -> Void) -> [S] {
@@ -55,4 +79,12 @@ open class PluggableApplicationDelegate: UIResponder, UIApplicationDelegate {
 
         return returns
     }
+    
+    override open func responds(to aSelector: Selector!) -> Bool {
+        if let isHaveServicesResponds = _methodRespondsCache[NSStringFromSelector(aSelector)] {
+            return isHaveServicesResponds
+        } else {
+            return super.responds(to: aSelector)
+        }
+    }
 }