need help understanding this code
<p>this code in book <a href="http://rads.stackoverflow.com/amzn/click/1935182323" rel="nofollow">jQuery in action</a> page 131</p>

<p>i don't understand </p>

<p><em><strong>.trigger('adjustName');</em></strong></p>

<p>what is adjustName</p>

<p>and Simple explanation for trigger()</p>

<p>thanks :)</p>

<pre><code>$('#addFilterButton').click( function() {
    var filterItem = $('&lt;div&gt;')
    .addClass('filterItem')
    .appendTo('#filterPane')
    .data('suffix','.' + (filterCount++));
    $('div.template.filterChooser')
    .children().clone().appendTo(filterItem)
    .trigger('adjustName');
});
</code></pre>
