public void Constructor()
        {
            //ExStart
            //ExFor:DocumentBase
            //ExSummary:Shows how to initialize the subclasses of DocumentBase.
            Document doc = new Document();

            Assert.AreEqual(typeof(DocumentBase), doc.GetType().BaseType);

            GlossaryDocument glossaryDoc = new GlossaryDocument();

            doc.GlossaryDocument = glossaryDoc;

            Assert.AreEqual(typeof(DocumentBase), glossaryDoc.GetType().BaseType);
            //ExEnd
        }