title: How to delete Task correctly
body: <p>Have I in some way delete this Task or it is self-destroyed?</p>
  
  <pre><code>Task.Factory.StartNew(() =&gt; { DoSomeJob(); }, TaskCreationOptions.LongRunning);
  </code></pre>
  
  <p>or it is better to use it like </p>
  
  <pre><code>var t = Task.Factory.StartNew(() =&gt; { DoSomeJob(); }, TaskCreationOptions.LongRunning);
  </code></pre>
  
  <p>and somehow later <strong>delete/nullize</strong> t?</p>
  
  <p>Thank you!</p>