Creates an enum validator for an enum where all cases are parameterless, or where all subtypes of the sealed hierarchy T are
objects. This enumeration will only be used for documentation, as a value outside of the allowed values will not be decoded in the
first place (the decoder has no other option than to fail).
Creates an enum validator for an enum where all cases are parameterless, or where all subtypes of the sealed hierarchy T are
objects. This enumeration will only be used for documentation, as a value outside of the allowed values will not be decoded in the
first place (the decoder has no other option than to fail).