public void DelayRenderingWhenNetworkIsEditingIsTrue()
        {
            var network = new Network();
            network.BeginEdit(new DefaultEditAction("edit"));
            var layer = new NetworkCoverageSegmentLayer
                            {
                                DataSource = new NetworkCoverageFeatureCollection
                                                 {
                                                     NetworkCoverage =
                                                         new NetworkCoverage {Network = network}
                                                 }
                            };

            var renderer = new NetworkCoverageSegmentRenderer();
            var result = renderer.Render(null, null, layer);

            Assert.IsTrue(result); // True because rendering did not fail
            Assert.IsTrue(layer.RenderRequired); // True, to indicate rendering is delayed
        }