up!</span><span class='lparen'>(</span><span class='id identifier rubyid_klass'>klass</span><span class='rparen'>)</span>
  <span class='id identifier rubyid_klass'>klass</span><span class='period'>.</span><span class='id identifier rubyid_required'>required</span> <span class='kw'>do</span>
    <span class='id identifier rubyid_klass'>klass</span><span class='period'>.</span><span class='id identifier rubyid_string'>string</span><span class='lparen'>(</span><span class='symbol'>:user</span><span class='rpa