kotlinx.coroutines.YieldContext -> cc8:
# {"id":"sourceFile","fileName":"Unconfined.kt"}
    boolean dispatcherWasUnconfined -> Y
    kotlinx.coroutines.YieldContext$Key Key -> Z
      # {"id":"com.android.tools.r8.residualsignature","signature":"Lbn2;"}
    3:5:void kotlinx.coroutines.YieldContext$Key.<init>():38:38 -> <clinit>
    3:5:void kotlinx.coroutines.YieldContext$Key.<init>(kotlin.jvm.internal.DefaultConstructorMarker):0 -> <clinit>
    3:5:void <clinit>():0 -> <clinit>
    6:8:void <clinit>():0:0 -> <clinit>
