/**
* Deletes all user data in the activity.
*
* @return bool Always true.
*/
public function reset_user_data($userid = null)
{
// Must have manage templates capability.
require_capability('mod/dataform:managetemplates', $this->context);
$entryman = new mod_dataform_entry_manager($this->id);
$entryman->delete_entries($userid);
return true;
}
