@Override public void validateRestoreSnapshot(BlockSnapshot snapshot,Volume parent){
  if (snapshot.getEmName() == null) {
    super.validateRestoreSnapshot(snapshot,parent);
  }
}

@ Override public void validateRestoreSnapshot ( BlockSnapshot snapshot , Volume parent ) { if ( snapshot . getEmName ( ) == null ) { super . validateRestoreSnapshot ( snapshot , parent ) ; } }
validates a restore snapshot request .
