public void AddVertexIntegrationTest()
        {
            Assert.Inconclusive("TODO.");

            IGraphService       target     = CreateIGraphService(); // TODO: Initialize to an appropriate value
            VertexSpecification definition = null;                  // TODO: Initialize to an appropriate value
            int expected = 0;                                       // TODO: Initialize to an appropriate value
            int actual;

            actual = target.AddVertex(definition);
            Assert.AreEqual(expected, actual);
        }