anchor.diff:      </tr>
   </table>
   <script type="text/javascript">
  -    //method used to toggle the corresponding values of the pkce method in the form input
       function togglePKCEMethod() {
           var radios = document.getElementsByName('code_challenge_method');
           var pkceMethod = "";
  
positive.code:     }
  
      $( document ).ready(pkceChangeVisibility);
      $("form[name='oauthLoginForm']").change(pkceChangeVisibility)
  </script>
  <%
  
negative.code: 
                  MessageDigest digest = MessageDigest.getInstance("SHA-256");
                  byte[] hash = digest.digest(code_verifier.getBytes(StandardCharsets.US_ASCII));
                  //Base64 encoded string is trimmed to remove trailing CR LF
                  code_challenge = new String(Base64.encodeBase64URLSafe(hash), StandardCharsets.US_ASCII).trim();
                  //set the generated code verifier to the current user session
                  session.setAttribute(OAuth2Constants.OAUTH2_PKCE_CODE_VERIFIER, code_verifier);
  
  