/**
* @see FileInterface::get_file_internal_revisions()
* @return array
*/
public function get_file_internal_revisions()
{
if ($this->file_id) {
$file_version_array = FileVersion_Access::list_entries_by_toid($this->file_id);
$return_array = array();
foreach ($file_version_array as $key => $value) {
$file_version = new FileVersion_Access($value);
array_push($return_array, $file_version->get_internal_revision());
}
if (count($return_array) > 0) {
return $return_array;
} else {
return null;
}
}
}
