Use @api annotation instead of @todo api

src/ol/render/renderevent.js

@@ -11,17 +11,17 @@ goog.require('ol.render.IVectorContext');
 ol.render.EventType = {
   /**
    * @event ol.render.Event#postcompose
-   * @todo api
+   * @api
    */
   POSTCOMPOSE: 'postcompose',
   /**
    * @event ol.render.Event#precompose
-   * @todo api
+   * @api
    */
   PRECOMPOSE: 'precompose',
   /**
    * @event ol.render.Event#render
-   * @todo api
+   * @api
    */
   RENDER: 'render'
 };
@@ -49,7 +49,7 @@ ol.render.Event = function(
   /**
    * For canvas, this is an instance of {@link ol.render.canvas.Immediate}.
    * @type {ol.render.IVectorContext|undefined}
-   * @todo api
+   * @api
    */
   this.vectorContext = opt_vectorContext;
 
@@ -60,7 +60,7 @@ ol.render.Event = function(
 
   /**
    * @type {olx.FrameState|undefined}
-   * @todo api
+   * @api
    */
   this.frameState = opt_frameState;
 
@@ -68,7 +68,7 @@ ol.render.Event = function(
    * Canvas context. Only available when a Canvas renderer is used, null
    * otherwise.
    * @type {CanvasRenderingContext2D|null|undefined}
-   * @todo api
+   * @api
    */
   this.context = opt_context;
 
@@ -76,7 +76,7 @@ ol.render.Event = function(
    * WebGL context. Only available when a WebGL renderer is used, null
    * otherwise.
    * @type {ol.webgl.Context|null|undefined}
-   * @todo api
+   * @api
    */
   this.glContext = opt_glContext;