/**
* Returns an array containing, for each field, the arary key used for that
* field in self::$_fields.
*
* @return array
*/
static function &fieldKeys()
{
if (!self::$_fieldKeys) {
self::$_fieldKeys = array('id' => 'id', 'context' => 'context', 'name' => 'name', 'data' => 'data', 'is_config' => 'is_config');
}
return self::$_fieldKeys;
}
