[TYPO3-mvc] How to check if object was created ?

[Dawid Pacholczyk]

Hello List,
  I have this sample code

$temp = t3lib_div::makeInstance("Tx_MyExt_Domain_Model_Record");
				$temp = $this->findByExtRec($resVal['uid']);

How can I check is $temp is really an object?

Not always I`ll find an object in database so I need to check before 
I`ll use for example $temp->getUid()

How can I do that ?

Best regards,
Dawid Pacholczyk