public AgentWriter(IApi api, IDogStatsd statsd, bool automaticFlush = true, int queueSize = 1000)
{
_tracesBuffer = new AgentWriterBuffer <Span[]>(queueSize);
_api = api;
_statsd = statsd;
_flushTask = automaticFlush ? Task.Run(FlushTracesTaskLoopAsync) : Task.FromResult(true);
}