question: get the promotioncode value . concode_field_sep String product concode_elem_sep String name concode_elem_sep String promotionCode concode_elem_sep String publisher concode_field_sep String product concode_elem_sep Plan withPublisher concode_elem_sep String name concode_elem_sep Plan withProduct concode_elem_sep String publisher concode_elem_sep Plan withName concode_elem_sep Plan withPromotionCode
target: String function ( ) { return this . promotionCode ; }