clearMarkers method

@override void clearMarkers()

Do not forget to call setRepaint()

Implementation

@override
void clearMarkers() {
  for (var marker in _markers) {
    marker.dispose();
  }
  _markers.clear();
  _CurrentMarkers<T>? currentMarkers = _currentMarkers;
  if (currentMarkers != null) {
    currentMarkers._initializedMarkers.clear();
    currentMarkers._cachedMarkers.clear();
    requestRepaint();
  }
}