+-----------------------------+
                |      TE Topology Model      |
                +-----------------------------+
                               |
          +-------------+-------------+-------------+
          |             |             |             |
          V             V             V             V
   +-------------+                            +-------------+
   | Technology- |                            | Technology- |
   |  Specific   |   ......................   |  Specific   |
   | TE Topology |                            | TE Topology |
   |   Model 1   |                            |   Model n   |
   +-------------+                            +-------------+