How to acces map data from component

Hello everybody,
I’m trying to test my own localization system. To do this I need to interact with map data that are handled in Isaac by the map component:
However from the documentation seems that there are no incoming/outgoing messages from the map component but the data is directly accessed by all the other components.
I would like to have an example on how to access this data like all the others components do.
I would like also to ask if in future releases there will be the possibility to transfer map data among codelets through messages.
I found a topic that refer to a similar problem; however it doesn’t seem to be solved yet.

Thanks in advance,