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|   ~NexthopPortMapperObserver ()
 | ~NexthopPortMapperObserver | 
[virtual]
|  void  nexthop_port_mapper_event (bool is_mapping_changed)
 | nexthop_port_mapper_event | 
[pure virtual]
The next-hop port mapping has changed.
Parameters:
| is_mapping_changed | if true, the port mapping has changed, otherwise it remains same (i.e., it has been only "touched"). |