anchor.diff:    String? profileFilename;
     if (args.wasParsed(argProfileMemory)) {
       profileFilename = args[argProfileMemory];
  -  } else if (args.wasParsed(argProfileMemoryOld)) {
  -    profileFilename = args[argProfileMemoryOld];
     }
     if (profileFilename != null && !path.isAbsolute(profileFilename)) {
       profileFilename = path.absolute(profileFilename);
  
positive.code:       help:
            'Start devtools headlessly and write memory profiling samples to the '
            'indicated file.',
      )
  // TODO: Remove this after a release or two.
      ..addOption(
        argProfileMemoryOld,
        defaultsTo: 'memory_samples.json',
        hide: true,
      )
      ..addOption(
        argAppSizeBase,
        valueHelp: 'appSizeBase',
        help: 'Path to the base app size file used for app size debugging.',
        hide: true,
      )
      ..addOption(
        argAppSizeTest,
        valueHelp: 'appSizeTest',
        help: 'Path to the test app size file used for app size debugging. This '
            'file should only be specified if a base app size file (appSizeBase) '
            'is also specified.',
        hide: true,
      );
  
    // Args to show for verbose mode.
    parser
  
negative.code: const argHost = 'host';
  const argPort = 'port';
  const argProfileMemory = 'record-memory-profile';
  const argTryPorts = 'try-ports';
  const argVerbose = 'verbose';
  const launchDevToolsService = 'launchDevTools';
  