(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code UnsupportedSetType)
  (message "`set` types are reserved but not supported in beta.9")
  (file "<fixture>")
  (span
    (bytes 31 43)
    (range 4 16 4 28)
  )
  (expected "supported concrete type")
  (found "(set string)")
  (hint "use current concrete arrays, vectors, option/result, structs, enums, or scalars")
)