// each verify response has this method
$status = $response->get('status');
// zarinpal provider has status field too.
}
/**
* Work with PaymentNeeds
* every Request|Verify need extended `PaymentNeeds` class
*/
$needs = new PaymentNeeds();
$needs->has('key');
// false
$needs->set('key', 'value');
$needs->has('key');
// true
$needs->hasAll('key', 'attr', 'foo');
// false
$needs->set('attr', 'val');
$needs->hasAll('key', 'attr', 'foo');
// false
$needs->set('foo', 'bar');
$needs->hasAll('key', 'attr', 'foo');
// true
$value = $needs->get('key');
// value
//OR
$value = $needs->getKey();
// value
$value = $needs->getFoo();
// bar
$value = $needs->getWhat();
// null
