type probeFn … func appendPluginBasedOnFeatureFlags(plugins []volume.VolumePlugin, inTreePluginName string, featureGate featuregate.FeatureGate, pluginInfo pluginInfo) ([]volume.VolumePlugin, error) { … } type pluginInfo … func appendLegacyProviderVolumes(allPlugins []volume.VolumePlugin, featureGate featuregate.FeatureGate) ([]volume.VolumePlugin, error) { … }