# toMap method

Map <String, dynamic> toMap ()

## Implementation

    Map<String, dynamic> toMap() {
      final Map<String, dynamic> updateMap = <String, dynamic>{};

      void addIfNonNull(String fieldName, dynamic value) {
        if (value != null) {
          updateMap[fieldName] = value;
        }
      }

      addIfNonNull('markersToAdd', serializeOverlaySet(markersToAdd));
      addIfNonNull('markersToChange', serializeOverlaySet(markersToChange));
      addIfNonNull('markerIdsToRemove', markerIdsToRemove.toList());

      return updateMap;
    }