docs: function(yasr, L) {
      var url = 'https://wmts10.geo.admin.ch/1.0.0/ch.swisstopo.pixelkarte-farbe/default/current/3857/{z}/{x}/{y}.jpeg';
      var stopoAttr = 'Map data &copy; <a href="https://www.swisstopo.admin.ch/">swisstopo</a> , ';
      var tilelayer = new L.tileLayer(url,{id: 'stopo.light', attribution: stopoAttr, minZoom: 4, maxZoom: 19});
  
      return {
        layers: [tilelayer] ,
        crs: L.CRS.EPSG3857,
            continuousWorld: true,
            worldCopyJump: false
      };
    }