protected void Render(AntiGoal antigoal)
        {
            int lineWidth = 1;
            if (antigoal.AgentAssignments().Count() > 0)
                lineWidth = 2;

            AddParallelogram (antigoal.Identifier, antigoal.FriendlyName,
                lineWidth, 1, 234.0/255, 192.0/255);
        }