func test() {
    // Setting permissions
    permissions.camera.set(.allowed)
    permissions.photos.set(.notDetermined)

    // Functions are useful in page objects and allows
    // reusing code, for example, for transitions between states of the app
    pageObjects.initial
        .authorize(user: testUser)
        .goToCvScreen()
        
    // Aliases for simple assertions (you can add your own):
    pageObjects.simpleCv.view.assertIsDisplayed()
    pageObjects.simpleCv.title.assertHasText("My CV")
    
    // Fully customizable assertions
    pageObjects.simpleCv.addressField.assertMatches { element in
        element.text != addressFieldInitialText && element.text.isNotEmpty
    }
    
    // Network stubbing.
    networking.stubbing
        .stub(urlPattern: ".*?example.com/api/cv")
        .thenReturn(file: "cv.json")
    // There is also a monitoring feature, including recording+replaying feature that
    // allows to record all network and replay in later, so your tests will not require internet.
    
    // Actions
    pageObjects.simpleCV.occupationField.setText("iOS developer")
    pageObjects.simpleCV.createCVButton.tap()
}

public final class MapScreen:
    BasePageObjectWithDefaultInitializer,
    ScreenWithNavigationBar // protocol extensions are very useful for sharing code
{
    // Basic locator  
    public var mapView: ViewElement {
        return element("Map view") { element in
            element.id == "GoogleMapView"
        }
    }
    
    // You can use complex checks
    // Note that you can create your own matchers like `element.isFooBar()`
    public func pin(coordinates: Coordinates, deltaInMeters: Double = 10) -> ViewElement {
        return element("Pin with coordinates \(coordinates)") { element in
            element.id == "pin" && element
                .customValues["coordinates", Coordinates.self]
                .isClose(to: coordinates, deltaInMeters: deltaInMeters)
        }
    }
}

public final class RatingStarsElement:
    BaseElementWithDefaultInitializer,
    ElementWithUi
{
    public func assertRatingEqualsTo(
        _ number: Int,
        file: StaticString = #file,
        line: UInt = #line)
    {
        assertMatches(file: file, line: line) { element in
            element.customValues["rating"] == number
        }
    }
}