public void validationStatesRemoved(K key){
  hideMessage(key);
  validationErrorStates.remove(key);
  notifyUpstream(key,Collections.<ValidationState>emptySet());
}

public void validationStatesRemoved ( K key ) { hideMessage ( key ) ; validationErrorStates . remove ( key ) ; notifyUpstream ( key , Collections . < ValidationState > emptySet ( ) ) ; }
removes all validation states for the given key .
