class ElasticApmTracer implements Tracer {

    @Override
    @Nullable
    public Transaction startRootTransaction(@Nullable ClassLoader initiatingClassLoader) {
        return startRootTransaction(sampler, -1, initiatingClassLoader);
    }

      ElasticApmTracer(ConfigurationRegistry configurationRegistry, Reporter reporter, ObjectPoolFactory poolFactory, ApmServerClient apmServerClient, MetaData metaData);

}