// Either wwids or combination of targetWWNs and lun must be set, but not both simultaneously.
  // +optional
  repeated string wwids = 5;
}

// FlexPersistentVolumeSource represents a generic persistent volume resource that is
// provisioned/attached using an exec based plugin.
message FlexPersistentVolumeSource {
  // driver is the name of the driver to use for this volume.
  optional string driver = 1;