Issue #1957554 by rlmumford : Updated comments for helper function...

/**

 * Helper function to collect all available view modes for the file entity.

 *

 * @return array

 *   Return an array of view modes keyed by machine name.

 */

function media_pane_get_view_mode_options() {

  $options = array('default' => t('Default'));

  $file_info = entity_get_info('file');

  $file_info = entity_get_info('fieldable_panels_pane');

  foreach ($file_info['view modes'] as $name => $def) {

    $options[$name] = $def['label'];

  }