package errhttp type GatewayTimeout interface { ServerError GatewayTimeout() } var _ GatewayTimeout = internalGatewayTimeout{} type internalGatewayTimeout struct { err error } func GatewayTimeoutWrap(err error) error { return internalGatewayTimeout{ err:err, } } func (receiver internalGatewayTimeout) Error() string { return receiver.err.Error() } func (receiver internalGatewayTimeout) Err() error { return receiver.err } func (internalGatewayTimeout) ServerError() { // Nothing here. } func (internalGatewayTimeout) GatewayTimeout() { // Nothing here. } func (receiver internalGatewayTimeout) Unwrap() error { return receiver.err }