code: func GetDynamicPluginProber(pluginDir string, runner exec.Interface) volume.DynamicPluginProber {
  	return &flexVolumeProber{
  		pluginDir: pluginDir,
  		watcher:   utilfs.NewFsnotifyWatcher(),
  		factory:   pluginFactory{},
  		runner:    runner,
  		fs:        &utilfs.DefaultFs{},
  	}
  }
docs: // GetDynamicPluginProber creates dynamic plugin prober