Supported conformance classes
http://www.opengis.net/spec/ogcapi-common-1/1.0/conf/core
http://www.opengis.net/spec/ogcapi-common-1/1.0/conf/landing-page
http://www.opengis.net/spec/ogcapi-common-1/1.0/conf/html
http://www.opengis.net/spec/ogcapi-common-1/1.0/conf/json
http://www.opengis.net/spec/ogcapi-common-1/1.0/conf/oas30
http://www.opengis.net/spec/ogcapi-common-2/1.0/conf/collections
http://www.opengis.net/spec/ogcapi-common-2/1.0/conf/json
http://www.opengis.net/spec/ogcapi-common-2/1.0/conf/html
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/core
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/tilesets
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/background
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/scaling
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/display-resolution
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/spatial-subsetting
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/datetime
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/general-subsetting
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/crs
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/collection-map
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/styled-map
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/png
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/jpeg
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/html
http://www.opengis.net/spec/ogcapi-maps-1/1.0/conf/oas30
http://www.opengis.net/spec/ogcapi-styles-1/0.0/conf/core