docs: def get_routing_table_entries(self, x, y):
          """Dump the multicast routing table of a given chip.
  
          Returns
          -------
          [(:py:class:`~rig.routing_table.RoutingTableEntry`, app_id, core) \
            or None, ...]
              Ordered list of routing table entries with app_ids and
              core numbers.
          """
          # Determine where to read from, perform the read
          rtr_addr = self.read_struct_field("sv", "rtr_copy", x, y)
          read_size = struct.calcsize(consts.RTE_PACK_STRING)
          rtr_data = self.read(rtr_addr, consts.RTR_ENTRIES * read_size, x, y)
  
          # Read each routing table entry in turn
          table = list()
          while len(rtr_data) > 0:
              entry, rtr_data = rtr_data[:read_size], rtr_data[read_size:]
              table.append(unpack_routing_table_entry(entry))
          return table