A serializable reference to an operation invocation — the target operation's key plus its input.
Describes a deferred/late-bound invocation that must survive a serialization boundary (e.g. riding
on a process-failure error, or persisted) where a live Definition cannot. Resolve the key
with OperationHandlerSet.getHandlerByKey and hand the result to the invoker. Carries no functions,
so input must itself be serializable.
A serializable reference to an operation invocation — the target operation's key plus its input. Describes a deferred/late-bound invocation that must survive a serialization boundary (e.g. riding on a process-failure error, or persisted) where a live Definition cannot. Resolve the key with
OperationHandlerSet.getHandlerByKeyand hand the result to the invoker. Carries no functions, soinputmust itself be serializable.