public void Then_the_command_is_correct()
 {
     BootCommandParser.TryParse(_input, out var command, out _);
     Assert.That(command, Is.EqualTo(_command));
 }
 public void Then_the_argument_is_correct()
 {
     BootCommandParser.TryParse(_input, out var _, out var argument);
     Assert.That(argument, Is.EqualTo(_argument));
 }
 public void Then_the_return_value_is_correct()
 {
     Assert.That(BootCommandParser.TryParse(_input, out _, out _), Is.EqualTo(_result));
 }