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

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

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

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