code: protected boolean lacksSomeLanguage(ItemDocument itemDocument) {
  		for (int i = 0; i < arabicNumeralLanguages.length; i++) {
  			if (!itemDocument.getLabels()
  					.containsKey(arabicNumeralLanguages[i])) {
  				return true;
  			}
  		}
  		return false;
  	}
docs: Returns true if the given item document lacks a label for at least one of
  the languages covered.
  
  @param itemDocument
  @return true if some label is missing