kotlinx.coroutines.flow.internal.NullSurrogateKt -> nn4:
# {"id":"sourceFile","fileName":"NullSurrogate.kt"}
    kotlinx.coroutines.internal.Symbol NULL -> a
      # {"id":"com.android.tools.r8.residualsignature","signature":"Lvw3;"}
    kotlinx.coroutines.internal.Symbol UNINITIALIZED -> b
      # {"id":"com.android.tools.r8.residualsignature","signature":"Lvw3;"}
    1:11:void <clinit>():12:12 -> <clinit>
    12:21:void <clinit>():19:19 -> <clinit>
