public static function &connection($records = null)
{
$mock = new MockAdapter(compact('records') + array('columns' => array('lithium\\tests\\mocks\\data\\MockModelCompositePk' => array('client_id', 'invoice_id', 'payment')), 'autoConnect' => false));
static::meta(array('key' => array('client_id', 'invoice_id'), 'locked' => true));
return $mock;
}