code: func (c *StorageGateway) UpdateBandwidthRateLimit(input *UpdateBandwidthRateLimitInput) (*UpdateBandwidthRateLimitOutput, error) {
  	req, out := c.UpdateBandwidthRateLimitRequest(input)
  	return out, req.Send()
  }
docs: // UpdateBandwidthRateLimit API operation for AWS Storage Gateway.
  //
  // Updates the bandwidth rate limits of a gateway. You can update both the upload
  // and download bandwidth rate limit or specify only one of the two. If you
  // don't set a bandwidth rate limit, the existing rate limit remains.
  //
  // By default, a gateway's bandwidth rate limits are not set. If you don't set
  // any limit, the gateway does not have any limitations on its bandwidth usage
  // and could potentially use the maximum available bandwidth.
  //
  // To specify which gateway to update, use the Amazon Resource Name (ARN) of
  // the gateway in your request.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for AWS Storage Gateway's
  // API operation UpdateBandwidthRateLimit for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeInvalidGatewayRequestException "InvalidGatewayRequestException"
  //   An exception occurred because an invalid gateway request was issued to the
  //   service. For more information, see the error and message fields.
  //
  //   * ErrCodeInternalServerError "InternalServerError"
  //   An internal server error has occurred during the request. For more information,
  //   see the error and message fields.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/storagegateway-2013-06-30/UpdateBandwidthRateLimit