Sets up the router with the corresponding chassis
        (create slots and insert default adapters).

def _setup_chassis(self):
        """
        Sets up the router with the corresponding chassis
        (create slots and insert default adapters).
        """

        # 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()