set the product 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 String promotionCode concode_elem_sep String publisher concode_elem_sep Plan withName concode_elem_sep Plan withPromotionCode
Plan function ( String arg0 ) { this . product = arg0 ; return this ; }