public void Setup()
        {
            m_Bus = Substitute.For <ISelkieInMemoryBus>();
            m_Creator = Substitute.For <INodeModelCreator>();

            m_Model = new StartNodeModel(m_Bus,
                                         m_Creator);
        }
        public void Setup()
        {
            m_Bus = Substitute.For <ISelkieInMemoryBus>();
            m_Helper = Substitute.For <INodeIdHelper>();

            m_Model = new StartNodeModel(m_Bus,
                                         m_Helper);
        }