title: jQuery Autocomplete get source option
body: <p>How to get a list of the items for autocomplete? I mean, the source values (hints for autocomplete).
  I tried this:</p>
  
  <pre><code>$("#autocomplete").autocomplete('option', 'source');
  </code></pre>
  
  <p>But this doesn't work.</p>
  
  <p>Sorry for my poor Enlish and poor jQuery knowledge.</p>