This endpoint returns cities matching the given criteria.
excludeGroupedCities=true
polygon=polygon[0][lat]=43.12&polygon[0][lon]=5.93&polygon[1][lat]=43.12&polygon[1][lon]=6.01&polygon[2][lat]=43.07&polygon[2][lon]=6.01&polygon[3][lat]=43.07&polygon[3][lon]=5.93
"asc"
"desc"