src/PaymentSlip.php
public function setDisplayAmount($displayAmount = true)
    {
        $this->isBool($displayAmount, 'displayAmount');
        $this->displayAmount = $displayAmount;

        return $this;
    }
public function setDisplayAmount($displayAmount = true)
    {
        $this->isBool($displayAmount, 'displayAmount');
        $this->displayAmount = $displayAmount;

        return $this;
    }
public function setDisplayAmount ( $ displayAmount = true ) { $ this -> isBool ( $ displayAmount , 'displayAmount' ) ; $ this -> displayAmount = $ displayAmount ; return $ this ; }
Set whether or not to display the amount

@param bool $displayAmount True if yes, false if no
@return $this The current instance for a fluent interface.
Set whether or not to display the amount