dittoBusStreamDidEnqueueDataWithMessageSequence

abstract fun dittoBusStreamDidEnqueueDataWithMessageSequence(    busStream: DittoBusStream,     messageSequence: BigInteger,     error: DittoError?)

The operation to enqueue outgoing data on a stream has completed. More data may now be enqueued.

The message sequence number may be used to track when the remote side has fully acknowledged receipt.

error will be non-nil if the operation failed.