Pinq\Expressions\ArgumentExpression::isUnpacked PHP Method

    public function isUnpacked()
    {
        return $this->isUnpacked;
    }

 protected function visitArgument(ArgumentExpression $expression)
 {
     if ($expression->isUnpacked()) {
         throw new PinqDemoSqlException('Does not support argument unpacking');
     }
     $this->walk($expression->getValue());
 }