readCount.set(0);
        } finally {
          unlock();
        }
      }
    }

    void runUnlockedCleanup() {
      // locked cleanup may generate notifications we can send unlocked
      if (!isHeldByCurrentThread()) {
        map.processPendingNotifications();
      }
    }
  }

    }

    @Override
    public void forEach(Consumer<? super V> action) {
      checkNotNull(action);
      // avoids allocation of entries for those maps that generate fresh entries on iteration
      map.forEach((k, v) -> action.accept(v));
    }

    @Override
    public boolean remove(@CheckForNull Object o) {
      try {
        return super.remove(o);

          readCount.set(0);
        } finally {
          unlock();
        }
      }
    }

    void runUnlockedCleanup() {
      // locked cleanup may generate notifications we can send unlocked
      if (!isHeldByCurrentThread()) {
        map.processPendingNotifications();
      }
    }
  }