Body::getUniqueObjects

protected function getUniqueObjects(array $nodes)
{
	$result = $hashs = [];
	foreach($nodes as $node)
	{
		if(!is_object($node))
		{
			continue;
		}
		$hash = spl_object_hash($node);
		if(!isset($hashs[$hash]))
		{
			$hashs[$hash] = 1;
			$result[] = $node;
		}
	}

	return $result;
}