BMFReverseGeoCodeSearchResult.fromMap constructor Null safety

Implementation

BMFReverseGeoCodeSearchResult.fromMap(Map map)
    : assert(
          map != null, // ignore: unnecessary_null_comparison
          'Construct a BMFReverseGeoCodeSearchResult，The parameter map cannot be null !') {
  location =
      map['location'] == null ? null : BMFCoordinate.fromMap(map['location']);
  address = map['address'];
  businessCircle = map['businessCircle'];
  addressDetail = map['addressDetail'] == null
      ? null
      : BMFAddressComponent.fromMap(map['addressDetail']);
  confidence = map['confidence'];
  if (map['poiList'] != null) {
    List<BMFPoiInfo> tmpPoiList = [];
    map['poiList'].forEach((v) {
      tmpPoiList.add(BMFPoiInfo.fromMap(v as Map));
    });
    poiList = tmpPoiList;
  }

  if (map['poiRegions'] != null) {
    List<BMFSearchRGCRegionInfo> tmpPoiRegions = [];
    map['poiRegions'].forEach((v) {
      tmpPoiRegions.add(BMFSearchRGCRegionInfo.fromMap(v as Map));
    });
    poiRegions = tmpPoiRegions;
  }
  sematicDescription = map['sematicDescription'];
}