Struct Peer 

#[non_exhaustive]
pub struct Peer {
    pub host_id: Uuid,
    pub address: NodeAddr,
    pub tokens: Vec<Token>,
    pub datacenter: Option<String>,
    pub rack: Option<String>,
}

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

host_id: Uuid

address: NodeAddr

tokens: Vec<Token>

datacenter: Option<String>

rack: Option<String>