title: In Quartz.NET, concurrent jobs scheduling
body: <p>In Quartz.NET, I want to get current executing jobs as a list.</p>
  <pre><code>var jobs = scheduler.GetCurrentlyExecutingJobs(); 
  </code></pre>
  <p>But it didn't return an <code>IEnumerable</code> result. I can not make it <code>IEnumerable</code> to get <code>JobKeys</code>.</p>
  <p>Actually I want to pause a scheduled job when the other one is starting to run. But I don't know how to do.</p>