nt'>video</span><span class='words_sep'>
  </span><span class='tstring_content'>folder</span><span class='words_sep'>
  </span><span class='tstring_content'>paper</span><span class='words_sep'>
  </span><span class='tstring_content'>others</span><span class='words_sep'>
</span><span class='tstring_end'>]</span></span><span class='period'>.</span><span class='id identifier rubyid_freeze'>freeze</span></pre></dd>
      
    </dl>
  







  
    <h2>
      Class Method Summary
      <small><a href="#" class=