Cannot Find ProtocolName in Libp2p For Custom Protocol Support

[sileneundula]

Issue

impl ProtocolName for MarkdownProtocol {
    fn protocol_name(&self) -> &[u8] {
        b"/markdown/1.0.0"
    }
}

I cannot find the custom protocol naming convention in Libp2p 0.55.0

It shows up as an error

[elenaf9]

ProtocolName has been removed in favor of using AsRef<str>, see #3746.