def to_xml # :nodoc:
      xml = Builder::XmlMarkup.new
      xml.instruct!
      @xml = xml.tag!('send-buyer-message', {
        :xmlns => "http://checkout.google.com/schema/2",
        "google-order-number" => @google_order_number
      }) do
        xml.tag!("message", @message)
        xml.tag!("send-email", true)
      end
      @xml
    end
def to_xml # :nodoc:
      xml = Builder::XmlMarkup.new
      xml.instruct!
      @xml = xml.tag!('send-buyer-message', {
        :xmlns => "http://checkout.google.com/schema/2",
        "google-order-number" => @google_order_number
      }) do
        xml.tag!("message", @message)
        xml.tag!("send-email", true)
      end
      @xml
    end
Make a new message to send.

 The last argument is the actual message.

 Call +post+ on the resulting object to submit it to Google for sending.