ViewController.swift

import UIKit
import Combine

...

class ViewController: UIViewController {

    ...
    
    private func bindStateToTitle() {
        
        self.$state
            // 1
            .receive(on: DispatchQueue.main)
            // 2
            .map { $0.rawValue }
            // 3
            .handleEvents(receiveOutput: { [weak self] stateString in
                self?.navigationItem.title = stateString
            })
            .sink { _ in }
            .store(in: &cancellables)
    }
    
    private func bindAvatarToImageView() {
        ...
    }
    
    private func getAvatarFromTheServer() -> AnyPublisher<UIImage, Error> {
        ...
    }

}