docs: func (c *ConfigService) DescribeDeliveryChannelsRequest(input *DescribeDeliveryChannelsInput) (req *request.Request, output *DescribeDeliveryChannelsOutput) {
  	op := &request.Operation{
  		Name:       opDescribeDeliveryChannels,
  		HTTPMethod: "POST",
  		HTTPPath:   "/",
  	}
  
  	if input == nil {
  		input = &DescribeDeliveryChannelsInput{}
  	}
  
  	output = &DescribeDeliveryChannelsOutput{}
  	req = c.newRequest(op, input, output)
  	return
  }