[ CCode ( cname = "CHAMPLAIN_MAP_SOURCE_OSM_AERIAL_MAP" ) ]
[ Version ( deprecated = true ) ]
public const string MAP_SOURCE_OSM_AERIAL_MAP
Warning: MAP_SOURCE_OSM_AERIAL_MAP is deprecated.
Mapquest Open Aerial
Mapquest isn't available any more and will be removed in the next release.
As it doens't exist, it isn't registered to the factory and the 'create' method won't return any source.