Macro prefix 

macro_rules! prefix {
    ($vis:vis $name:ident, $prefix:literal) => { ... };
}

Defines a Prefix unit struct for use with crate::Puuid.

Example

use puuid::prefix;

// Defines a public struct 'User' with prefix "user"
prefix!(pub User, "user");

// Defines a private struct 'Secret' with prefix "sk"
prefix!(Secret, "sk");