code: def get_ipv6fs_table(self):
          
          ipv6fs_table = self._global_tables.get(RF_IPv6_FLOWSPEC)
          # Lazy initialization of the table.
          if not ipv6fs_table:
              ipv6fs_table = IPv6FlowSpecTable(self._core_service,
                                               self._signal_bus)
              self._global_tables[RF_IPv6_FLOWSPEC] = ipv6fs_table
              self._tables[(None, RF_IPv6_FLOWSPEC)] = ipv6fs_table
  
          return ipv6fs_table
docs: Returns global IPv6 Flow Specification table.
  
          Creates the table if it does not exist.