/**
* Constructor.
*
* @param ClassMetadata $metadata
* @param GraphWalker $graphWalker
* @param object $mergeFrom
* @param object $mergeTo
*/
public function __construct(ClassMetadata $metadata, GraphWalker $graphWalker, $mergeFrom, $mergeTo)
{
$this->metadata = $metadata;
$this->graphWalker = $graphWalker;
$this->mergeFrom = $mergeFrom;
$this->mergeTo = $mergeTo;
$this->propertyAccessor = $graphWalker->getPropertyAccessorRegistry()->getPropertyAccessor($this->metadata->accessor);
}
public function flushStack()
{
$this->graphWalker->flushStack();
}