goog.require('ol.Map');
goog.require('ol.View');
goog.require('ol.extent');
goog.require('ol.format.WMTSCapabilities');
goog.require('ol.layer.Tile');
goog.require('ol.proj');
goog.require('ol.source.OSM');
goog.require('ol.source.TileImage');
goog.require('ol.source.TileWMS');
goog.require('ol.source.WMTS');
goog.require('ol.source.XYZ');
goog.require('ol.tilegrid.TileGrid');
