code: def _setup_chassis(self):
          
  
          # With 1751 and 1760, WICs in WIC slot 1 show up as in slot 1, not 0
          # e.g. s1/0 not s0/2
          if self._chassis in ['1751', '1760']:
              self._create_slots(2)
              self._slots[1] = C1700_MB_WIC1()
          else:
              self._create_slots(1)
          self._slots[0] = C1700_MB_1FE()
docs: Sets up the router with the corresponding chassis
          (create slots and insert default adapters).