GeoJsonMultiLine serialized to type `Line`

[albertoleal19]

I am new to GeoJson, but I notice that the GeoJsonFeature GeoJsonMultiLine when serialized the value of the Type is Line, however, when parsing a geojson collection that includes as feature with Type Line an exception is throw.

The serialization code is in src/models.dart at line 241:

  /// Serialize to a geojson feature string
  String serializeFeature(Map<String, dynamic>? properties) {
    final geoSeries = <GeoSerie?>[];
    for (final line in lines) {
      geoSeries.add(line.geoSerie);
    }
    return _buildGeoJsonFeature(
        geoSeries, "Line", properties ?? <String, dynamic>{"name": name});
  }

As you can notice, the type value is set to Line.

Looking at the code, in the file src/geojson.dart at line 498:

  case "MultiLineString":
    if (query != null) {
      if (query.geometryType != null) {
        if (query.geometryType != GeoJsonFeatureType.multiline) {
          continue;
        }
      }
    }
    feature = _processGeometry(geometry, properties, nameProperty);
    break;

A case for MultiLineString is evaluated but there is no case for Line type.

So, the questions are:

• Why serialization of a GeoJson model (GeoJsonMultiLine) would set a type that doesn't fit to the GeoJson specifications, if it is not supported by the library? Is there a different way to generate GeoJson data?
• Is it a bug? Can it be solved?
• The generation of GeoJson data is not a recommended use case of this library?

Thanks in advance for your attention to this issue!!