code: def get_vpnv6fs_table(self):
          
          vpnv6fs_table = self._global_tables.get(RF_VPNv6_FLOWSPEC)
          # Lazy initialization of the table.
          if not vpnv6fs_table:
              vpnv6fs_table = VPNv6FlowSpecTable(self._core_service,
                                                 self._signal_bus)
              self._global_tables[RF_VPNv6_FLOWSPEC] = vpnv6fs_table
              self._tables[(None, RF_VPNv6_FLOWSPEC)] = vpnv6fs_table
  
          return vpnv6fs_table
docs: Returns global VPNv6 Flow Specification table.
  
          Creates the table if it does not exist.