/**
* Returns invoice between holders
*
* @param RM_Holder_Object $obSource
* @param RM_Holder_Object $obDestination
* @return RM_Holder_Invoice
*/
public function getInvoiceBetweenHolders(RM_Holder_Object $obSource, RM_Holder_Object $obDestination)
{
return $this->_mapper->getInvoiceBetweenHolders($obSource, $obDestination);
}