Include method to access the mask url

Author: ovalle15

examples/basics/export_data.ipynb

@@ -375,13 +375,6 @@
         }
       ],
       "execution_count": null
-    },
-    {
-      "metadata": {},
-      "source": [],
-      "cell_type": "code",
-      "outputs": [],
-      "execution_count": null
     }
   ]
 }