lass="type">(<tt>true</tt>, <tt>false</tt>)</span>
          <span class="default">
            
              &mdash; default:
              <tt>default is true</tt>
            
          </span>
          
        </li>
      
        <li>
          <span class="name">:lock_prefix</span>
          <span class="type">(<tt>String</tt>)</span>
          <span class="default">
            
              &mdash; default:
              <tt>default is &#39;uniquejobs&#39;</tt>
            
          </span>
   