OptionaldocumentationAbsolute HTTP(S) URL with migration or deprecation documentation.
OptionalreasonOptional human-readable explanation.
OptionalreplacementURI reference for the preferred replacement operation.
UTC ISO 8601 timestamp when the contract became deprecated.
OptionalsunsetUTC ISO 8601 timestamp after which the contract may stop being served.
Lifecycle metadata for an HTTP contract that external clients should stop using.