Serialization of List<Feature> does not include type

[rmpt]

Serialization of feature lists should include the feature type. We are forced to use a FeatureCollection to the type be included in the serialization.

List<Feature> features = new ArrayList<>();
features.add(new Feature());
String json = new ObjectMapper().writeValueAsString(features);
System.out.println(json);
// output: [{"properties":{},"geometry":null}]

[hylkevds]

In case someone else runs into this, more background information can be found in this issue: FasterXML/jackson-databind#1015

Workaround: instead of using List<Feature>, use:

private static class FeatureList extends ArrayList<GeoJsonObject> {};
private final FeatureList features = new FeatureList();