1using mars.rover.domain;
 2
 3namespace mars.rover.presentation.model
 4{
 5    internal class UnknownNavigation : Navigation
 6    {
 7        public UnknownNavigation() : base('?', null)
 8        {
 9        }
10
11        public override void run_against(Rover rover)
12        {
13        }
14
15        public override bool is_satisfied_by(char item)
16        {
17            return true;
18        }
19    }
20}