diff --git a/src/ol/renderer/canvas/canvasimagelayerrenderer.js b/src/ol/renderer/canvas/canvasimagelayerrenderer.js
index 853b6a03bd..47385527af 100644
--- a/src/ol/renderer/canvas/canvasimagelayerrenderer.js
+++ b/src/ol/renderer/canvas/canvasimagelayerrenderer.js
@@ -48,6 +48,7 @@ ol.renderer.canvas.ImageLayer.prototype.getImage = function() {
 
 
 /**
+ * @protected
  * @return {ol.layer.ImageLayer} Single image layer.
  */
 ol.renderer.canvas.ImageLayer.prototype.getImageLayer = function() {
diff --git a/src/ol/renderer/canvas/canvastilelayerrenderer.js b/src/ol/renderer/canvas/canvastilelayerrenderer.js
index ce334386a7..f7dbd66813 100644
--- a/src/ol/renderer/canvas/canvastilelayerrenderer.js
+++ b/src/ol/renderer/canvas/canvastilelayerrenderer.js
@@ -86,6 +86,7 @@ ol.renderer.canvas.TileLayer.prototype.getImage = function() {
 
 
 /**
+ * @protected
  * @return {ol.layer.TileLayer} Tile layer.
  */
 ol.renderer.canvas.TileLayer.prototype.getTileLayer = function() {
diff --git a/src/ol/renderer/dom/domimagelayerrenderer.js b/src/ol/renderer/dom/domimagelayerrenderer.js
index f74e213dfe..f0feaed037 100644
--- a/src/ol/renderer/dom/domimagelayerrenderer.js
+++ b/src/ol/renderer/dom/domimagelayerrenderer.js
@@ -45,6 +45,7 @@ goog.inherits(ol.renderer.dom.ImageLayer, ol.renderer.dom.Layer);
 
 
 /**
+ * @protected
  * @return {ol.layer.ImageLayer} Image layer.
  */
 ol.renderer.dom.ImageLayer.prototype.getImageLayer = function() {
@@ -109,7 +110,7 @@ ol.renderer.dom.ImageLayer.prototype.renderFrame =
       goog.dom.appendChild(this.target, imageElement);
       this.image_ = image;
     }
-    this.setTransform(transform);
+    this.setTransform_(transform);
 
     this.updateAttributions(frameState.attributions, image.getAttributions());
     this.updateLogos(frameState, imageSource);
@@ -120,8 +121,9 @@ ol.renderer.dom.ImageLayer.prototype.renderFrame =
 
 /**
  * @param {goog.vec.Mat4.AnyType} transform Transform.
+ * @private
  */
-ol.renderer.dom.ImageLayer.prototype.setTransform = function(transform) {
+ol.renderer.dom.ImageLayer.prototype.setTransform_ = function(transform) {
   if (!goog.vec.Mat4.equals(transform, this.transform_)) {
     ol.dom.transformElement2D(this.target, transform, 6);
     goog.vec.Mat4.setFromArray(this.transform_, transform);
diff --git a/src/ol/renderer/dom/domlayerrenderer.js b/src/ol/renderer/dom/domlayerrenderer.js
index cf3ab548c1..04e6b94c8f 100644
--- a/src/ol/renderer/dom/domlayerrenderer.js
+++ b/src/ol/renderer/dom/domlayerrenderer.js
@@ -37,6 +37,7 @@ ol.renderer.dom.Layer.prototype.disposeInternal = function() {
 
 
 /**
+ * @protected
  * @return {!Element} Target.
  */
 ol.renderer.dom.Layer.prototype.getTarget = function() {
diff --git a/src/ol/renderer/dom/domtilelayerrenderer.js b/src/ol/renderer/dom/domtilelayerrenderer.js
index 7236881298..197048b272 100644
--- a/src/ol/renderer/dom/domtilelayerrenderer.js
+++ b/src/ol/renderer/dom/domtilelayerrenderer.js
@@ -61,6 +61,7 @@ goog.inherits(ol.renderer.dom.TileLayer, ol.renderer.dom.Layer);
 
 
 /**
+ * @protected
  * @return {ol.layer.TileLayer} Tile layer.
  */
 ol.renderer.dom.TileLayer.prototype.getTileLayer = function() {
diff --git a/src/ol/renderer/layerrenderer.js b/src/ol/renderer/layerrenderer.js
index 72b3db2bbd..7b9ee37c6f 100644
--- a/src/ol/renderer/layerrenderer.js
+++ b/src/ol/renderer/layerrenderer.js
@@ -81,6 +81,7 @@ ol.renderer.Layer.prototype.dispatchChangeEvent = function() {
 
 
 /**
+ * @protected
  * @return {ol.layer.Layer} Layer.
  */
 ol.renderer.Layer.prototype.getLayer = function() {
@@ -89,6 +90,7 @@ ol.renderer.Layer.prototype.getLayer = function() {
 
 
 /**
+ * @protected
  * @return {ol.Map} Map.
  */
 ol.renderer.Layer.prototype.getMap = function() {
@@ -97,6 +99,7 @@ ol.renderer.Layer.prototype.getMap = function() {
 
 
 /**
+ * @protected
  * @return {ol.renderer.Map} Map renderer.
  */
 ol.renderer.Layer.prototype.getMapRenderer = function() {
@@ -264,6 +267,7 @@ ol.renderer.Layer.prototype.updateUsedTiles =
  *     determine if the tile is loaded.
  * @param {ol.source.TileSource} tileSource Tile source.
  * @param {ol.Projection} projection Projection.
+ * @protected
  * @return {function(number, number, number): ol.Tile} Returns a tile if it is
  *     loaded.
  */
diff --git a/src/ol/renderer/webgl/webglimagelayerrenderer.js b/src/ol/renderer/webgl/webglimagelayerrenderer.js
index c6b1e2f885..0af96b7796 100644
--- a/src/ol/renderer/webgl/webglimagelayerrenderer.js
+++ b/src/ol/renderer/webgl/webglimagelayerrenderer.js
@@ -72,6 +72,7 @@ ol.renderer.webgl.ImageLayer.prototype.createTexture_ = function(image) {
 
 
 /**
+ * @protected
  * @return {ol.layer.ImageLayer} Tile layer.
  */
 ol.renderer.webgl.ImageLayer.prototype.getImageLayer = function() {
diff --git a/src/ol/renderer/webgl/webgllayerrenderer.js b/src/ol/renderer/webgl/webgllayerrenderer.js
index 0ba2fa0b02..c0ed01dabe 100644
--- a/src/ol/renderer/webgl/webgllayerrenderer.js
+++ b/src/ol/renderer/webgl/webgllayerrenderer.js
@@ -157,6 +157,7 @@ ol.renderer.webgl.Layer.prototype.getColorMatrix = function() {
 
 
 /**
+ * @protected
  * @return {ol.renderer.webgl.Map} MapRenderer.
  */
 ol.renderer.webgl.Layer.prototype.getWebGLMapRenderer = function() {
diff --git a/src/ol/renderer/webgl/webgltilelayerrenderer.js b/src/ol/renderer/webgl/webgltilelayerrenderer.js
index e0bc1fa404..79369dc52c 100644
--- a/src/ol/renderer/webgl/webgltilelayerrenderer.js
+++ b/src/ol/renderer/webgl/webgltilelayerrenderer.js
@@ -88,6 +88,7 @@ ol.renderer.webgl.TileLayer.prototype.disposeInternal = function() {
 
 
 /**
+ * @protected
  * @return {ol.layer.TileLayer} Tile layer.
  */
 ol.renderer.webgl.TileLayer.prototype.getTileLayer = function() {