/**
* return foreign keys and entity references
*
* @static
* @access public
* @return array of CRM_Core_EntityReference
*/
static function getReferenceColumns()
{
if (!self::$_links) {
self::$_links = array(new CRM_Core_EntityReference(self::getTableName(), 'sdd_creditor_id', 'civicrm_sdd_creditor', 'id'), new CRM_Core_EntityReference(self::getTableName(), 'sdd_file_id', 'civicrm_sdd_file', 'id'));
}
return self::$_links;
}
