From 285349eced3873c2ec18ac8d0400fbca23e04197 Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Thu, 12 Jan 2017 12:00:49 +0100
Subject: [PATCH] Add empty ol.format.TopoJSON.prototype.write*

---
 src/ol/format/topojson.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/ol/format/topojson.js b/src/ol/format/topojson.js
index 5d8184ec55..c52f2b31f7 100644
--- a/src/ol/format/topojson.js
+++ b/src/ol/format/topojson.js
@@ -395,3 +395,24 @@ ol.format.TopoJSON.GEOMETRY_READERS_ = {
   'MultiLineString': ol.format.TopoJSON.readMultiLineStringGeometry_,
   'MultiPolygon': ol.format.TopoJSON.readMultiPolygonGeometry_
 };
+
+
+/**
+ * Not implemented.
+ * @inheritDoc
+ */
+ol.format.TopoJSON.prototype.writeFeatureObject = function(feature, opt_options) {};
+
+
+/**
+ * Not implemented.
+ * @inheritDoc
+ */
+ol.format.TopoJSON.prototype.writeFeaturesObject = function(features, opt_options) {};
+
+
+/**
+ * Not implemented.
+ * @inheritDoc
+ */
+ol.format.TopoJSON.prototype.writeGeometryObject = function(geometry, opt_options) {};