code: func ProbeVolumePlugins() []volume.VolumePlugin {
  	p := &csiPlugin{
  		host:         nil,
  		blockEnabled: utilfeature.DefaultFeatureGate.Enabled(features.CSIBlockVolume),
  	}
  	return []volume.VolumePlugin{p}
  }
docs: // ProbeVolumePlugins returns implemented plugins