markerChanged abstract method

Notifies the datastore that a marker's properties have changed.

This method should be called when a marker's position, appearance, or other properties are modified after it has been added to the datastore. This allows the datastore to:

• Update internal indexes or caches
• Re-evaluate marker visibility or filtering
• Trigger any necessary reprocessing

marker The marker that has been modified

Common Use Cases:

• Marker position changes (animation, GPS updates)
• Marker style or appearance changes
• Marker data or label updates
• Marker visibility state changes

Note: Consider calling requestRepaint if the changes affect the visual representation of the marker.

marker.position = newPosition;
datastore.markerChanged(marker);
datastore.requestRepaint();