<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>
<% if presenter.service_ticket_result.valid? %>
  <cas:authenticationSuccess>
    <cas:user><%= presenter.username.to_s.to_xs %></cas:user>
    <% if presenter.proxy_granting_ticket_iou %>
    <cas:proxyGrantingTicket><%= presenter.proxy_granting_ticket_iou.to_s.to_xs %></cas:proxyGrantingTicket>
    <% end %>
  </cas:authenticationSuccess>
<% else %>
  <cas:authenticationFailure code="<%= presenter.service_ticket_result.message_category %>">
  <%= presenter.service_ticket_result.message %>
  </cas:authenticationFailure>
<% end %>
</cas:serviceResponse>