}
  }

  final class EntryIterator extends HashIterator<Entry<K, V>> {

    @Override
    public Entry<K, V> next() {
      return nextEntry();
    }
  }

  abstract class AbstractCacheSet<T> extends AbstractSet<T> {
    @Override
    public int size() {
      return LocalCache.this.size();
    }

    @Override
    public boolean isEmpty() {

import com.google.common.cache.CacheLoader.InvalidCacheLoadException;
import com.google.common.cache.CacheLoader.UnsupportedLoadingOperationException;
import com.google.common.cache.LocalCache.AbstractCacheSet;
import com.google.common.collect.AbstractSequentialIterator;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterators;