tendermint 0.40.4

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides core types for representing information about Tendermint blockchain networks, including chain information types, secret connections, and remote procedure calls (JSON-RPC).
Documentation 
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use crate::{privval::RemoteSignerError, PublicKey};

/// PubKeyResponse
#[derive(Clone, PartialEq, Eq, Debug)]
// Todo: either pub_key OR error is present
pub struct PubKeyResponse {
    /// Public key
    pub pub_key: Option<PublicKey>,

    /// Error
    pub error: Option<RemoteSignerError>,
}

// =============================================================================
// Protobuf conversions
// =============================================================================

tendermint_pb_modules! {
    use super::PubKeyResponse;
    use pb::privval::PubKeyResponse as RawPubKeyResponse;

    impl Protobuf<RawPubKeyResponse> for PubKeyResponse {}

    impl TryFrom<RawPubKeyResponse> for PubKeyResponse {
        type Error = crate::Error;

        fn try_from(value: RawPubKeyResponse) -> Result<Self, Self::Error> {
            Ok(PubKeyResponse {
                pub_key: value.pub_key.map(TryInto::try_into).transpose()?,
                error: value.error.map(TryInto::try_into).transpose()?,
            })
        }
    }

    impl From<PubKeyResponse> for RawPubKeyResponse {
        fn from(value: PubKeyResponse) -> Self {
            RawPubKeyResponse {
                pub_key: value.pub_key.map(Into::into),
                error: value.error.map(Into::into),
            }
        }
    }
}
// Todo: write unit test