 class='kw'>def</span> <span class='id identifier rubyid_authenticate_url'>authenticate_url</span><span class='lparen'>(</span><span class='id identifier rubyid_params'>params</span> <span class='op'>=</span> <span class='kw'>nil</span><span class='rparen'>)</span>
  <span class='kw'>return</span> <span class='kw'>if</span> <span class='id identifier rubyid_token'>token</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>

  <span class='id identifier rubyid_params'>params<