anchor.diff:      <div class="whitespace" id="exceptions">
       <h4>Exceptions</h4>
       <table class="table table-striped table-hover">
  +      <% unless @mediaobject.groups.empty? %>
         <thead>
           <tr>
             <td rowspan="2">Groups</td>
           </tr>
         </thead>
  -      <% unless groups.empty? %>
           <tbody>
  -          <% groups.each do |group| %>
  +          <% @mediaobject.groups.each do |group| %>
           <tr>
             <td><%= group %></td>
             <td class="controls">[delete]</td>  
  
positive.code:       </tbody>
      <% end %>
      
        <thead>
          <tr>
            <td rowspan="2">Groups</td>
          </tr>
        </thead>
        <% unless users.empty? %>
          <tbody>
            <% users.each do |user| %>
          <tr>
            <td><%= user %></td>
            <td class="controls">[delete]</td>  
  
negative.code: 
      <%= label_tag :access do %>
        <%= radio_button_tag :access, 'restricted', (@mediaobject.access == 'restricted') %>
        Only registered @mediaobject.users should have access to this resource
      <% end %>
  
      <%= label_tag :access do %>
  