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#[derive(Copy, Clone, Debug)] enum Version { Unpublished, } impl<'a> From<Version> for &'a str { fn from(_item: Version) -> &'a str { "Unpublished" } } #[cfg(test)] mod tests { use super::*; #[test] fn wip() { assert_eq!(Into::<&'static str>::into(Version::Unpublished), "Unpublished"); } }