Improve ol.geom.*.clone() return type annotation

src/ol/geom/circle.js

@@ -29,7 +29,8 @@ goog.inherits(ol.geom.Circle, ol.geom.SimpleGeometry);
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Circle} Clone.
  * @api
  */
 ol.geom.Circle.prototype.clone = function() {

src/ol/geom/geometrycollection.js

@@ -83,7 +83,8 @@ ol.geom.GeometryCollection.prototype.listenGeometriesChange_ = function() {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.GeometryCollection} Clone.
  * @api stable
  */
 ol.geom.GeometryCollection.prototype.clone = function() {

src/ol/geom/linearring.js

@@ -46,7 +46,8 @@ goog.inherits(ol.geom.LinearRing, ol.geom.SimpleGeometry);
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.LinearRing} Clone.
  * @api stable
  */
 ol.geom.LinearRing.prototype.clone = function() {

src/ol/geom/linestring.js

@@ -75,7 +75,8 @@ ol.geom.LineString.prototype.appendCoordinate = function(coordinate) {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.LineString} Clone.
  * @api stable
  */
 ol.geom.LineString.prototype.clone = function() {

src/ol/geom/multilinestring.js

@@ -71,7 +71,8 @@ ol.geom.MultiLineString.prototype.appendLineString = function(lineString) {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiLineString} Clone.
  * @api stable
  */
 ol.geom.MultiLineString.prototype.clone = function() {

src/ol/geom/multipoint.js

@@ -46,7 +46,8 @@ ol.geom.MultiPoint.prototype.appendPoint = function(point) {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiPoint} Clone.
  * @api stable
  */
 ol.geom.MultiPoint.prototype.clone = function() {

src/ol/geom/multipolygon.js

@@ -109,7 +109,8 @@ ol.geom.MultiPolygon.prototype.appendPolygon = function(polygon) {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.MultiPolygon} Clone.
  * @api stable
  */
 ol.geom.MultiPolygon.prototype.clone = function() {

src/ol/geom/point.js

@@ -28,7 +28,8 @@ goog.inherits(ol.geom.Point, ol.geom.SimpleGeometry);
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Point} Clone.
  * @api stable
  */
 ol.geom.Point.prototype.clone = function() {

src/ol/geom/polygon.js

@@ -99,7 +99,8 @@ ol.geom.Polygon.prototype.appendLinearRing = function(linearRing) {
 
 
 /**
- * @inheritDoc
+ * Make a complete copy of the geometry.
+ * @return {!ol.geom.Polygon} Clone.
  * @api stable
  */
 ol.geom.Polygon.prototype.clone = function() {