drupal template hint overriding

/**
 * Determine node template overwrites
 *
 * @param array $vars
 * @param string $hook
 */
function THEME-NAME_preprocess_node(&$vars, $hook) {

    switch ($hook) {
    case 'node':
      // Here is the way to switch to a different node- template based on node properties.
      if ($vars['page']) {
          
        // This is LIFO (Last In First Out) so put them in reverse order, i.e
        // most important last.
        $vars['template_files'] = array(
            'node-default-page', 
            'node-'. $vars['node']->nid, 
            'node-type-'. $vars['node']->type,
            'node-'. $vars['node']->path, 
        );
      } 
      elseif ($vars['node']->type) {
          $vars['template_files'] = array(
              sprintf('node-type-%s', $vars['node']->type),
          );
      }
      else {
          $vars['template_files'] = array(
              sprintf('node-%s', $vars['node']->nid),
          );
      }
      break;
  }
}