anchor.diff:          defaultsTo: '.ssh/pkey', help: 'The key to use when SSHing.')
       ..addOption('target',
           abbr: 't', help: 'The name of the target to pass to runtests.')
  +    ..addOption('arguments',
  +        abbr: 'a',
  +        help: 'Command line arguments to pass when invoking the tests')
       ..addMultiOption('far',
           abbr: 'f', help: 'The .far files to include for the test.');
   
  
positive.code:       identityFilePath: identityFile,
        command: <String>[
          'run',
          'fuchsia-pkg://fuchsia.com/$target#meta/$target.cmx'
        ],
      );
      stdout.writeln('Test results (passed: ${testResult.success}):');
  
negative.code:   const SshClient ssh = SshClient();
    final List<String> farFiles = args['far'];
    final String target = args['target'];
    final String arguments = args['arguments'];
    try {
      final String targetIp = await devFinder.getTargetAddress(deviceName);
      final AmberCtl amberCtl = AmberCtl(targetIp, identityFile);
  