if err != nil {
		return volumetypes.GeneratedOperations{}, deviceToDetach.GenerateErrorDetailed("UnmapDevice.FindMapperPluginByName failed", err)
	}

	if blockVolumePlugin == nil {
		return volumetypes.GeneratedOperations{}, deviceToDetach.GenerateErrorDetailed("UnmapDevice.FindMapperPluginByName failed to find BlockVolumeMapper plugin. Volume plugin is nil.", nil)
	}