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uuid(string $object, mixed $url)

Generates a unique non-random DOM ID for an object, based on the object type and url. This method is often used by helpers that need to generate unique DOM ID's for elements such as the AjaxHelper.

	$uuid = $this->uuid('form', array('controller' => 'posts', 'action' => 'index'));
	//$uuid contains 'form0425fe3bad'

1. $uuid = $this->uuid('form', array('controller' => 'posts', 'action' => 'index'));
2. //$uuid contains 'form0425fe3bad'