Description:    "Client disconnected before response was ready",
		HTTPStatusCode: 499, // No official code, use nginx value.
	},
	ErrTooManyRequests: {
		Code:           "TooManyRequests",
		Description:    "Please reduce your request rate",
		HTTPStatusCode: http.StatusTooManyRequests,
	},
	ErrUnsupportedMetadata: {
		Code:           "InvalidArgument",