Toothpick: User repository with no DI

UserRepository.java

public final class UserRepository {
    
    private final SharedPreferences sharedPreferences;

    public UserRepository(SharedPreferences sharedPreferences) {
        this.sharedPreferences = sharedPreferences;
    }

    public User getUser() {
        // ...
    }

    public void saveUser(User user) {
        // ... 
    }
}