def receive_message(wait_seconds = 3)
      result = Request::Xml.get(messages_path, query: {waitseconds: wait_seconds})
      return nil if result.nil?
      Result.new(self, result).get_message
    end
def receive_message(wait_seconds = 3)
      result = Request::Xml.get(messages_path, query: {waitseconds: wait_seconds})
      return nil if result.nil?
      Result.new(self, result).get_message
    end
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