(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code EmptyEnumUnsupported)
  (message "enum declarations must contain at least one variant")
  (file "<fixture>")
  (span
    (bytes 16 28)
    (range 4 1 4 13)
  )
  (hint "declare at least one payloadless or unary direct scalar/string payload variant")
)