/**
* Get the rent payment record from a tenant for a specified period
* @param int $tenant_id The ID used to identify the tenant
* @param string $start The start period of rent payment
* @param string $end The end period of rent payment
* @reutn array An array of renr objects
*/
public function getPaymentRecord($tenant_id, $start, $end)
{
$rentObj = new Rent();
return $rentObj->getPaymentsFromTenant($this->id, $start, $end);
}