addPOI
Adds a Point of Interest (POI) to the manager.
Return
true if the POI was successfully added, false otherwise (e.g., if a POI with the same ID already exists).
Parameters
poi
The PointOfInterest to add.
Adds a Point of Interest (POI) to the manager.
true if the POI was successfully added, false otherwise (e.g., if a POI with the same ID already exists).
The PointOfInterest to add.