public static bool IsEnumerationDatatype(this OntologyClass oClass)
        {
            INode oneOf = oClass.Graph.CreateUriNode(VocabularyHelper.OWL.oneOf);

            if (oClass.IsDatatype())
            {
                if (oClass.EquivalentClasses.Count() == 1)
                {
                    return(oClass.EquivalentClasses.Single().GetNodesViaPredicate(oneOf).Count() == 1);
                }
                else
                {
                    return(oClass.GetNodesViaPredicate(oneOf).Count() == 1);
                }
            }

            return(false);
        }