op'>&amp;</span><span class='id identifier rubyid_block'>block</span><span class='rparen'>)</span>
<span class='kw'>end</span></pre>
    </td>
  </tr>
</table>
</div>
    
      <div class="method_details ">
  <h3 class="signature " id="lock_class-instance_method">
  
    #<strong>lock_class</strong>  &#x21d2; <tt>Class</tt> 
  

  

  
    <span class="not_defined_here">
      Originally defined in module
        <span class='object_link'><a href="../OptionsWithFallback.html#lock_class-instance_method" tit