abel:</span>   <span class='id identifier rubyid_label'>label</span><span class='comma'>,</span>
    <span class='label'>delta:</span>   <span class='id identifier rubyid_delta'>delta</span><span class='comma'>,</span>
    <span class='label'>elapsed:</span> <span class='id identifier rubyid_t'>t</span> <span class='op'>-</span> <span class='ivar'>@start_time</span>
  <span class='rbrace'>}</span>
  <span class='ivar'>@last_time</span> <span class='op'>=</span> <span class='id identifier rubyid_t'>t</span>
