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- [Instructor] So, we tested the NetworkController…successfully, now we can integrate the method…in our ViewController.…I'm going to switch to the ViewController,…and the first thing we need…is to add a property that represents…the OpenWeatherMapNetworkController instance.…I'm going to make it private…because it should not be accessible…from other classes, from other parts of the application,…and I also make it lazy.…

Now lazy means that it's going to be initialized…when we access the property for the first time.…Let's call it controller, and its (mumbles),…OpenWeatherMapNetworkController,…and I instantiate it right away.…Again, this instance is going to be initialized…only when we first access it.…Next, I implement the missing functionality…and the textField should return Delegate method.…As you may remember, this Delegate method gets called…when the user taps the return key…after entering the city name.…

I'm going to invoke the fetchCurrentWeatherData method…on the controller instance,…controller.fetchCurrentWeatherData,…