Code completion result for source line:
$$('li:f|');
(QueryType=COMPLETION, prefixSearch=true, caseSensitive=true)
RULE       file                                       <i>All file uploads (type="file")</i>
RULE       first                                      <i>Equivalent to :eq(0)</i>
RULE       first-child                                <i>First child of its parent</i>
RULE       focus                                      <i>Element during user actions</i>