var threadPoolTypeString = cfg.GetStringProperty(PropertyThreadPoolType).NullSafeTrim();
if (threadPoolTypeString != null
    && threadPoolTypeString.NullSafeTrim().StartsWith("Quartz.Simpl.SimpleThreadPool", StringComparison.OrdinalIgnoreCase))
{
    // default to use as synonym for now
    threadPoolTypeString = typeof(DefaultThreadPool).AssemblyQualifiedNameWithoutVersion();
}

Type tpType = loadHelper.LoadType(threadPoolTypeString) ?? typeof(DefaultThreadPool);

try
{
    tp = ObjectUtils.InstantiateType<IThreadPool>(tpType);
}
catch (Exception e)
{
    initException = new SchedulerException("ThreadPool type ‘{0}‘ could not be instantiated.".FormatInvariant(tpType), e);
    throw initException;
}
tProps = cfg.GetPropertyGroup(PropertyThreadPoolPrefix, true);

Type jsType = loadHelper.LoadType(cfg.GetStringProperty(PropertyJobStoreType));
try
{
    js = ObjectUtils.InstantiateType<IJobStore>(jsType ?? typeof(RAMJobStore));
}
catch (Exception e)
{
    initException = new SchedulerException("JobStore of type ‘{0}‘ could not be instantiated.".FormatInvariant(jsType), e);
    throw initException;
}

private readonly SortedSet<TriggerWrapper> timeTriggers = new SortedSet<TriggerWrapper>(new TriggerWrapperComparator());