↓ 2 callersMethodinternalSendAsync(
ctx context.Context,
msg *ProducerMessage,
callback func(MessageID, *ProducerMessage, error),
flushImmed
pulsar/producer_partition.go:1317
↓ 2 callersFunctionrunCallback(cb func(MessageID, *ProducerMessage, error), id MessageID, msg *ProducerMessage, err error)
pulsar/producer_partition.go:606