Method from

client/src/error.rs:45–47

(e: io::Error)

impl error::Error for Error {
    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
        match self {
            Self::Std(e) => e.source(),
            #[cfg(all(feature = "grpc", any(feature = "http2", feature = "http3")))]
            Self::Grpc(e) => Some(e),
            _ => None,
        }