Diagnostics from A1.kt:
  for PSI element of type KtClass at (6,1) - (8,8)
    CLASSIFIER_REDECLARATION      text ranges: [(115,116)]
      PSI: KtClass at (6,1) - (8,8)

Diagnostics from A2.kt:
  for PSI element of type KtClass at (10,1) - (11,8)
    CLASSIFIER_REDECLARATION      text ranges: [(30,31)]
      PSI: KtClass at (10,1) - (11,8)

Diagnostics from A3.kt:
  <NO DIAGNOSTICS>
