Need to confirm what wikitude image recognition sample exactly does

Question

I am testing Wikitude sample in Cordova based application. I am able to run it on my android Moto g4+ device , however I am not sure what exactly "01_ImageRecognition_1_ImageOnTarget" sample is doing.

In mycase, the app is launched , I have added a button on click of which, I initialize the wikitude, here is the source code:

 // Url/Path to the augmented reality experience you would like to load
                self.arExperienceUrl = "www/wikitudesample/01_ImageRecognition_1_ImageOnTarget/index.html";
                // The features your augmented reality experience requires, only define the ones you really need
                self.requiredFeatures = ["image_tracking"];
                // Represents the device capability of launching augmented reality experiences with specific features
                self.isDeviceSupported = false;
                // Additional startup settings, for now the only setting available is camera_position (back|front)
                self.startupConfiguration = {
                    "camera_position": "back",
                    "camera_resolution": "auto"
                };
                // Application Constructor
                self.initialiseWikitude = function () {
                    console.log("wikitude: initialize");
                    self.wikitudePlugin = cordova.require("com.wikitude.phonegap.WikitudePlugin.WikitudePlugin");
                    console.log("after require");
                    self.wikitudePlugin.isDeviceSupported(self.onDeviceSupported, self.onDeviceNotSupported, self.requiredFeatures);
                };

                // Callback if the device supports all required features
                self.onDeviceSupported = function () {
                    console.log("wikitude: onDeviceSupported");



                    self.wikitudePlugin.loadARchitectWorld(
                            self.onARExperienceLoadedSuccessful,
                            self.onARExperienceLoadError,
                            self.arExperienceUrl,
                            self.requiredFeatures,
                            self.startupConfiguration
                            );

                };
                // Callback if the device does not support all required features
                self.onDeviceNotSupported = function (errorMessage) {
                    alert(errorMessage);
                    console.log("wikitude: onDeviceNotSupported");
                };
                // Callback if your AR experience loaded successful
                self.onARExperienceLoadedSuccessful = function (loadedURL) {
                    /* Respond to successful augmented reality experience loading if you need to */
                    console.log("wikitude: onARExperienceLoadedSuccessful");
                };

On launch of app, I invoke above code on click of button. On clicking the button everything successfully works (based on console logs). However what exactly this sample is doing?

If possible can someone post video recording of this sample?