     
     class func friendsGet() {
         VKAPI.Friends.get([.count : "1", .fields : "city,domain"])
-            .onSuccess { response in print("SwiftyVK: friends.get success \n \(response)") }
-            .onError { error in print("SwiftyVK: friends.get fail \n \(error)") }
+            .onSuccess { print("SwiftyVK: friends.get success \n \($0)") }
+            .onError { print("SwiftyVK: friends.get fail \n \($0)") }
             .send()
     }
     

        
        VK.sessions?.default.logIn(onSuccess: { info in
            print("SwiftyVK: success authorize with", info)
            }, onError: { error in
            print("SwiftyVK: authorize failed with", error)
            }
        )
    }
    

    
    
    class func captcha() {
        VKAPI.Custom.method(name: "captcha.force")
            .onSuccess { print("SwiftyVK: captcha.force success \n \($0)") }
            .onError { print("SwiftyVK: captcha.force fail \n \($0)") }
            .send()
    }
    
    
    
    class func validation() {
        VKAPI.Custom.method(name: "account.testValidation")
            .onSuccess { print("SwiftyVK: account.testValidation success \n \($0)") }
            .onError { print("SwiftyVK: account.testValidation fail \n \($0)") }
            .send()
    }
    
    
    
    class func usersGet() {
        VKAPI.Users.get([VK.Arg.userId : "1"])
            .onSuccess { print("SwiftyVK: users.get success \n \($0)") }
            .onError { print("SwiftyVK: friends.get fail \n \($0)") }
            .send()
    }
    
