(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code TypeAliasCycle)
  (message "type alias cycle includes `A`")
  (file "<fixture>")
  (span
    (bytes 22 23)
    (range 4 7 4 8)
  )
  (hint "type aliases must resolve to an existing non-alias concrete type")
  (related
    (span
      (file "<fixture>")
      (bytes 33 34)
      (range 5 7 5 8)
      (message "cycle also includes `B`")
    )
  )
)