incoming
An incoming Server-Sent Events (SSE) flow.
Each TypedServerSentEvent can contain the following fields:
TypedServerSentEvent.data data field of the event. It can be deserialized into an object of a desired type using the deserialize function
TypedServerSentEvent.event string identifying the type of event.
TypedServerSentEvent.id event ID.
TypedServerSentEvent.retry reconnection time, in milliseconds to wait before reconnecting.
TypedServerSentEvent.comments comment lines starting with a ':' character.