new MultiConsumerCallback((null != _bootstrapRegistrations) ?
_bootstrapRegistrations :
new ArrayList<DatabusV2ConsumerRegistration>(),
_consumerCallbackExecutor,
connConfig.getBstConsumerTimeBudgetMs(),
new BootstrapConsumerCallbackFactory(_bootstrapConsumerStats,
_unifiedClientStats),
_bootstrapConsumerStats,
_unifiedClientStats,
loggingConsumer,
_log);