Package version:
OptionalautoIndicates if autoFlush is enabled.
OptionalflushFlush Window.
A batch request will be sent after flushWindowInMs is reached.
OptionalinitialInitial Batch Action Count.
A batch request will be sent once the documents reach the initialBatchActionCount.
OptionalmaxMaximum number of Retries
OptionalmaxMax Delay between retries
OptionalthrottlingDelay between retries
Options for SearchIndexingBufferedSender.