# File lib/active_merchant/billing/integrations/world_pay/helper.rb, line 44
          def billing_address(params={})
            add_field(mappings[:billing_address][:zip], params[:zip])
            add_field(mappings[:billing_address][:country], lookup_country_code(params[:country]))
            
            address = [params[:address1], params[:address2], params[:city], params[:state]].compact
            add_field('address', address.join('
'))
          end