kotlinx.coroutines.CancelHandler$UserSupplied -> ht:
# {"id":"sourceFile","fileName":"CancellableContinuationImpl.kt"}
    int CancelHandler$UserSupplied.$r8$classId -> a
      # {"id":"com.android.tools.r8.synthesized"}
    kotlin.jvm.functions.Function1 handler -> b
      # {"id":"com.android.tools.r8.residualsignature","signature":"Ljava/lang/Object;"}
    1:8:void CancelHandler$UserSupplied.<init>(int,java.lang.Object):0:0 -> <init>
      # {"id":"com.android.tools.r8.synthesized"}
    10:29:java.lang.String kotlinx.coroutines.DisposeOnCancel.toString():504:504 -> toString
    30:38:java.lang.String toString():669:669 -> toString
    39:46:java.lang.String kotlinx.coroutines.DebugStringsKt.getClassSimpleName(java.lang.Object):17:17 -> toString
    39:46:java.lang.String toString():669 -> toString
    47:70:java.lang.String toString():669:669 -> toString
