STEP 0:
    modifications:
        U : ClassA.0.kt -> ClassA.kt
        U : ClassB.0.kt -> ClassB.kt
        U : Interface.0.kt -> Interface.kt
    added file: ClassA.kt, ClassB.kt, Interface.kt
STEP 1:
    updated exports: ClassB.kt
STEP 2:
    modifications:
        U : Interface.2.kt -> Interface.kt
    modified ir: Interface.kt
STEP 3:
    modifications:
        U : ClassB.3.kt -> ClassB.kt
    modified ir: ClassB.kt
    updated exports: ClassB.kt
STEP 4:
    modifications:
        U : Interface.4.kt -> Interface.kt
    modified ir: Interface.kt
    updated exports: Interface.kt
    updated imports: ClassB.kt, ClassA.kt
STEP 5:
    updated exports: ClassB.kt
STEP 6:
    modifications:
        U : ClassB.6.kt -> ClassB.kt
    modified ir: ClassB.kt
    updated exports: Interface.kt
STEP 7:
    modifications:
        U : ClassB.7.kt -> ClassB.kt
    modified ir: ClassB.kt
STEP 8:
    modifications:
        U : ClassA.8.kt -> ClassA.kt
    modified ir: ClassA.kt
STEP 9..10:
    updated exports: ClassA.kt
