Delivers one batch from the process's telemetry store. The batch goes back to
the store unless the delivery reported success — a defect included — so the
next call carries the same events again; a delivery failure is ignored and
never fails the caller. Kept for the flows that instrument a sequence and
must not see a delivery error. An empty store sends nothing here — the
app's own empty upload is the follow-up flush it runs right after a response
(the Pigeon upload spec, "The empty upload").
Delivers one batch from the process's telemetry store. The batch goes back to the store unless the delivery reported success — a defect included — so the next call carries the same events again; a delivery failure is ignored and never fails the caller. Kept for the flows that instrument a sequence and must not see a delivery error. An empty store sends nothing here — the app's own empty upload is the follow-up flush it runs right after a response (the Pigeon upload spec, "The empty upload").