fied_2_0">

 <p>
 If the <code>request</code> and <code>response</code> arguments to this method are not instances of
 <code>HttpServletRequest</code> and <code>HttpServletResponse</code>, respectively, the results of invoking this
 method are undefined.
 </p>

 <p>
 This method must respond to requests that <span class="changed_modified_2_2">contain</span> the following strings by
 invoking the <code>sendError</code> method on the response argument (cast to <code>HttpServletResponse</code>),
 passing the c