class='period'>.</span><span class='id identifier rubyid_to_s'>to_s</span>
      <span class='id identifier rubyid_file'>file</span><span class='lbracket'>[</span><span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>md5</span><span class='tstring_end'>&quot;</span></span><span class='rbracket'>]</span>  <span class='op'>=</span> <span class='const'>Digest</span><span class='op'>::</span><span class='const'>MD5</span><span class='period'>.</span><span class='id identifie