Derive Macro FromStrKind 

#[derive(FromStrKind)]
{
    // Attributes available to this derive:
    #[from_str_kind]
}

#[derive(FromStrKind)] — the inverse of Discriminant. Parses a string back to a variant using the same case-folded variant name. Only unit variants are supported (data variants need caller-supplied payloads — out of scope for a string-only parse).

Attributes

• #[from_str_kind(case = "kebab" | "snake" | "lower" | "title")] — case transform matching the wire format (default "kebab")
• Per-variant #[from_str_kind(name = "explicit")] — match a specific wire string for this variant (overrides case transform)
• #[from_str_kind(error = "MyEnumParseError")] — name of the generated error type (default <EnumName>ParseError)

Pairs with Discriminant: when both derives are on the same enum with the same case transform, s.parse() -> Ok(v); v.discriminant() == s — a typed round-trip.