(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code DuplicateStruct)
  (message "duplicate struct `Point`")
  (file "<fixture>")
  (span
    (bytes 50 55)
    (range 7 9 7 14)
  )
  (related
    (span
      (file "<fixture>")
      (bytes 24 29)
      (range 4 9 4 14)
      (message "original struct declaration")
    )
  )
)