code: func (c *StorageGateway) RefreshCache(input *RefreshCacheInput) (*RefreshCacheOutput, error) {
  	req, out := c.RefreshCacheRequest(input)
  	return out, req.Send()
  }
docs: // RefreshCache API operation for AWS Storage Gateway.
  //
  // Refreshes the cache for the specified file share. This operation finds objects
  // in the Amazon S3 bucket that were added, removed or replaced since the gateway
  // last listed the bucket's contents and cached the results. This operation
  // is only supported in the file gateway type. You can subscribe to be notified
  // through an Amazon CloudWatch event when your RefreshCache operation completes.
  // For more information, see Getting Notified About File Operations (https://docs.aws.amazon.com/storagegateway/latest/userguide/monitoring-file-gateway.html#get-notification).
  //
  // When this API is called, it only initiates the refresh operation. When the
  // API call completes and returns a success code, it doesn't necessarily mean
  // that the file refresh has completed. You should use the refresh-complete
  // notification to determine that the operation has completed before you check
  // for new files on the gateway file share. You can subscribe to be notified
  // through an CloudWatch event when your RefreshCache operation completes.
  //
  // 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 RefreshCache 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/RefreshCache