Serialize map in Ros2

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Hi,

I am navigating with an omnidirectional agv (ros2 foxy) and I want to use Slam localization mode while doing that. In detail I am using slam_toolbox with online_async mode at the moment. Is there a tutorial on how to use the serialization service to serialize the map I created while driving. Or whats the command, so I can use this map to localize on?

I used ros2 run nav2_map_server map_saver_cli -f /path/to/mapto save the map but as far as I understand these map files (.yaml and .pgm) aren't meant to localize on. I have to serialize the map to be able to use it with slam_toolbox again because than i get the files: .posegraph and .data right?

Please correct me if this is not correct.

Thanks in advance, have a great day!