The type of error category used by the library
using error_category = error_category ;
Declared in file <boost/url/error_types.hpp> at line 43
This alias is no longer supported and should not be used in new code. Please use `system::error_category` instead.
This alias is included for backwards compatibility with earlier versions of the library.
However, it will be removed in future releases, and using it in new code is not recommended.
Please use the updated version instead to ensure compatibility with future versions of the library.