presto-resource-group-managers/src/main/java/io/prestosql/plugin/resourcegroups/db/DbResourceGroupConfigurationManager.java/DbResourceGroupConfigurationManager/getCpuQuotaPeriod
class DbResourceGroupConfigurationManager:    @Override
    protected Optional<Duration> getCpuQuotaPeriod()
    {
        return cpuQuotaPeriod.get();
    }