trategy if lock can&#39;t be achieved.</p>
</div>
  </div>

<p>Locks a sidekiq job</p>


  </div>
</div>
<div class="tags">
  
<p class="tag_title">Yields:</p>
<ul class="yield">
  
    <li>
      
      
        <span class='type'></span>
      
      
      
        
        <div class='inline'><p>to the caller when given a block</p>
</div>
      
    </li>
  
</ul>
<p class="tag_title">Returns:</p>
<ul class="return">
  
    <li>
      
      
        <span class='type'>(<tt>String</tt>, <tt>nil</tt>)</s