Ouzo\Tests\ArrayAssert::findNonExistingElements PHP Method

    private function findNonExistingElements($elements)
    {
        $nonExistingElements = array();
        foreach ($elements as $element) {
            if (!Arrays::contains($this->actual, $element)) {
                $nonExistingElements[] = $element;
            }
        }
        return $nonExistingElements;
    }