[kotlinTraitDerivedInnerClasses.0.kt] Unclassified usage (7: 12) open class A: X {
[kotlinTraitDerivedInnerClasses.1.kt] Unclassified usage (4: 16) open class B: A() {
[kotlinTraitDerivedInnerClasses.1.kt] Unclassified usage (8: 16) open class C: Y {