title: No Visible @interface declares the selector 'deleteAllObjects'
body: <p>I am getting this error when I try to delete all of the objects in my Mans CoreData Entity.</p>
  
  <pre><code>No visible @interface for 'CoreDataController' declares the selector 'deleteAllObjects:'
  </code></pre>
  
  <p>It is happening as a result of me calling this inside my CoreDataController class.</p>
  
  <pre><code>[self deleteAllObjects:@"Mans"];
  </code></pre>
  
  <p>Any help would be greatly appreciated.</p>