Merge pull request #13338 from tschaub/get-layer-data

Get pixel data

src/ol/source/DataTile.js

@@ -108,7 +108,6 @@ class DataTileSource extends TileSource {
   }
 
   /**
-   * @abstract
    * @param {number} z Tile coordinate z.
    * @param {number} x Tile coordinate x.
    * @param {number} y Tile coordinate y.