(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code UnsupportedEnumEquality)
  (message "enum equality is supported only for payloadless enums and enums whose payload type is direct `i32`, `i64`, `u32`, `u64`, `f64`, `bool`, or `string`")
  (file "<fixture>")
  (span
    (bytes 121 213)
    (range 13 3 14 48)
  )
  (hint "match the enum and compare fields after extracting the struct payload")
)