(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code RecursiveStructFieldUnsupported)
  (message "recursive struct fields are not supported (`Left -> Right -> Left`)")
  (file "<fixture>")
  (span
    (bytes 69 73)
    (range 8 9 8 13)
  )
  (hint "flatten the struct graph or remove the recursive field")
  (related
    (span
      (file "<fixture>")
      (bytes 24 28)
      (range 4 9 4 13)
      (message "recursive struct declaration")
    )
  )
)