private List <object> createCollectionParts()
        {
            AstOclModelElementFactory factory1 = AstOclModelElementFactoryManager.getInstance(umlModel.getOclPackage());

            OclExpression elem1           = factory1.createIntegerLiteralExp(100, getClassifier("Integer"));
            OclExpression elem2           = factory1.createIntegerLiteralExp(200, getClassifier("Integer"));
            OclExpression elem3           = factory1.createIntegerLiteralExp(300, getClassifier("Integer"));
            List <object> collectionParts = new List <object> ();

            collectionParts.Add(factory1.createCollectionItem(elem1));
            collectionParts.Add(factory1.createCollectionItem(elem2));
            collectionParts.Add(factory1.createCollectionItem(elem3));

            return(collectionParts);
        }