public function setHandlingFee($handlingFee)
    {
        NumericValidator::validate($handlingFee, "Handling Fee");
        $handlingFee = Formatter::formatToPrice($handlingFee);
        $this->handlingFee = $handlingFee;
        return $this;
    }
public function setHandlingFee($handlingFee)
    {
        NumericValidator::validate($handlingFee, "Handling Fee");
        $handlingFee = Formatter::formatToPrice($handlingFee);
        $this->handlingFee = $handlingFee;
        return $this;
    }
public function setHandlingFee ( $ handlingFee ) { NumericValidator :: validate ( $ handlingFee , "Handling Fee" ) ; $ handlingFee = Formatter :: formatToPrice ( $ handlingFee ) ; $ this -> handlingFee = $ handlingFee ; return $ this ; }
Amount being charged for the handling fee.

@param string|double $handlingFee

@return $this
Amount being charged for the handling fee .