code: def publisher_set(type, value)
        pub = publisher_get(type)
  
        # create a new isbn record if we need to
        if pub.nil?
          pub = ONIX::Publisher.new
          pub.publishing_role = type
          product.publishers << pub
        end
  
        # store the new value
        pub.publisher_name = value.to_s
      end
docs: set the value of a particular ID