code: function subscribeOn(scheduler, delay) {
      if (delay === void 0) {
          delay = 0;
      }
      return function subscribeOnOperatorFunction(source) {
          return source.lift(new SubscribeOnOperator(scheduler, delay));
      };
  }
docs: PURE_IMPORTS_START _observable_SubscribeOnObservable PURE_IMPORTS_END