code: private WhiteSpace getDatatypeWhiteSpace() {
  		Grammar currGr = this.getCurrentGrammar();
  		if (currGr.isSchemaInformed() && currGr.getNumberOfEvents() > 0) {
  			Production prod = currGr.getProduction(0);
  			if (prod.getEvent().getEventType() == EventType.CHARACTERS) {
  				Characters ch = (Characters) prod.getEvent();
  				return ch.getDatatype().getWhiteSpace();
  			}
  		}
  
  		return null;
  	}
docs: returns null if no CH datatype is available or schema-less