A payload of type T wrapped in a class implementing the Sendable interface. Used to box values for sending via the message bus.
Constructor that adds a passed payload to the internal stored payload, creating a *shared* Boxed.
Payload value embedded in this message.
Type to embed into the Boxed as the type of the payload.
A payload of type T wrapped in a class implementing the Sendable interface. Used to box values for sending via the message bus.