androidx.concurrent.futures.CallbackToFutureAdapter$Resolver -> lf0:
# {"id":"sourceFile","fileName":"CallbackToFutureAdapter.java"}
    java.lang.Object attachCompleter(androidx.concurrent.futures.CallbackToFutureAdapter$Completer) -> i
      # {"id":"com.android.tools.r8.residualsignature","signature":"(Lkf0;)Ljava/lang/Object;"}
