docs: private List<EntityIdValue> getItemIdValueList(StatementGroup statementGroup) {
  		List<EntityIdValue> result = new ArrayList<>(statementGroup.size());
  
  		for (Statement s : statementGroup) {
  			Value v = s.getValue();
  			if (v instanceof EntityIdValue) {
  				result.add((EntityIdValue) v);
  			}
  		}
  
  		return result;
  	}