PayPal\Api\InvoiceItem::setDate PHP Method

The date when the item or service was provided. The date format is *yyyy*-*MM*-*dd* *z* as defined in Internet Date/Time Format.

public setDate ( string $date )
$date	string

    public function setDate($date)
    {
        $this->date = $date;
        return $this;
    }

InvoiceItem