Symfony\Component\Serializer\Annotation\Groups::__construct PHP Method

    public function __construct(array $data)
    {
        if (!isset($data['value']) || !$data['value']) {
            throw new InvalidArgumentException(sprintf('Parameter of annotation "%s" cannot be empty.', get_class($this)));
        }
        $value = (array) $data['value'];
        foreach ($value as $group) {
            if (!is_string($group)) {
                throw new InvalidArgumentException(sprintf('Parameter of annotation "%s" must be a string or an array of strings.', get_class($this)));
            }
        }
        $this->groups = $value;
    }