(diagnostic
  (schema slovo.diagnostic)
  (version 1)
  (severity error)
  (code InvalidEnumMatchArm)
  (message "`Reading.Value` match arm must bind its payload")
  (file "<fixture>")
  (span
    (bytes 133 148)
    (range 11 6 11 21)
  )
  (expected "(Reading.Value binding)")
)
