/**
* Extract file to given file path (real OS filesystem), existing files are overwritten.
*
* @param file_packer $packer file packer instance
* @param int $contextid context ID
* @param string $component component
* @param string $filearea file area
* @param int $itemid item ID
* @param string $pathbase path base
* @param int $userid user ID
* @return array|bool list of processed files; false if error
*/
public function extract_to_storage(file_packer $packer, $contextid, $component, $filearea, $itemid, $pathbase, $userid = NULL)
{
$archivefile = $this->get_content_file_location();
return $packer->extract_to_storage($archivefile, $contextid, $component, $filearea, $itemid, $pathbase);
}