addMarker method
Adds a new marker.
Implementation
@override
void addMarker(Marker<T> marker) {
_markers.add(marker);
_CurrentMarkers<T>? currentMarkers = _currentMarkers;
if (currentMarkers != null && marker.shouldPaint(currentMarkers.boundingBox, currentMarkers.zoomlevel)) {
reinitOneMarker(currentMarkers, marker).then((value) {
requestRepaint();
});
}
}