io.github.reactivecircus.cache4k.MutexEntry -> tf4:
# {"id":"sourceFile","fileName":"KeyedSynchronizer.kt"}
    kotlinx.coroutines.sync.Mutex mutex -> a
      # {"id":"com.android.tools.r8.residualsignature","signature":"Lvf4;"}
    int counter -> b
    1:3:void <init>(kotlinx.coroutines.sync.Mutex,int):66:66 -> <init>
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Lvf4;)V"}
    4:6:void <init>(kotlinx.coroutines.sync.Mutex,int):67:67 -> <init>
    7:9:void <init>(kotlinx.coroutines.sync.Mutex,int):68:68 -> <init>
