Interface HttpError

All Known Implementing Classes:
HttpError.ClientError, HttpError.NetworkFailure, HttpError.ServerError, HttpError.Timeout
@NullMarked public sealed interface HttpError permits HttpError.ClientError, HttpError.ServerError, HttpError.Timeout, HttpError.NetworkFailure
Typed failure hierarchy for DmxHttpClient.

Use exhaustive switch (or instanceof checks) to handle all failure categories without a fallthrough: 

switch (error) {
    case HttpError.ClientError  e -> log.warn("4xx {}", e.statusCode());
    case HttpError.ServerError  e -> log.error("5xx {}", e.statusCode());
    case HttpError.Timeout      e -> log.warn("timed out", e.cause());
    case HttpError.NetworkFailure e -> log.error("transport failure", e.cause());
}