anchor.diff:        ..._configuration.sharedOptions,
         ..._experimentsArgument(_configuration, testFile),
         ...vmOptions,
  +      ..._nnbdModeArgument(_configuration),
         ...args
       ];
     }
  
positive.code:     return [
        if (_enableAsserts) '--enable_asserts',
        ...vmOptions,
        ...testFile.sharedOptions,
        ..._configuration.sharedOptions,
        ..._experimentsArgument(_configuration, testFile),
  
negative.code:       else if (_configuration.hotReloadRollback)
          '--hot-reload-rollback-test-mode',
        ...vmOptions,
        ..._nnbdModeArgument(_configuration),
        ...testFile.sharedOptions,
        ..._configuration.sharedOptions,
        ..._experimentsArgument(_configuration, testFile),
  