http://ecn.t3.tiles.virtualearth.net...12303.png?g=41
<downloadUrl protocol="http" host="ecn.t3.tiles.virtualearth.net" path="/tiles/r{quadIndex}.png" query="g=41" />
http://ecn.t3.tiles.virtualearth.net...roductSet=mmOS
<downloadUrl protocol="http" host="ecn.t3.tiles.virtualearth.net" path="/tiles/r{quadIndex}.png" query="g=41&productSet=mmOS " />