+G_DEFINE_TYPE(GisMarker, gis_marker, GIS_TYPE_OBJECT);
+static void gis_marker_init(GisMarker *self) { }
+
+static void gis_marker_finalize(GObject *_self);
+static void gis_marker_class_init(GisMarkerClass *klass)
+{
+ G_OBJECT_CLASS(klass)->finalize = gis_marker_finalize;
+}
+