*   <li>Return a {@code ClosingFuture}. To turn a {@link ListenableFuture} into a {@code
   *       ClosingFuture} call {@link #from(ListenableFuture)}.
   *   <li>In case this step doesn't create new closeables, you can adapt an API that returns a
   *       {@link ListenableFuture} to return a {@code ClosingFuture} by wrapping it with a call to
   *       {@link #withoutCloser(AsyncFunction)}

        CacheLoader<? super K, V> loader)
        throws ExecutionException {
      ListenableFuture<V> loadingFuture = loadingValueReference.loadFuture(key, loader);
      return getAndRecordStats(key, hash, loadingValueReference, loadingFuture);
    }

    ListenableFuture<V> loadAsync(
        final K key,
        final int hash,
        final LoadingValueReference<K, V> loadingValueReference,

import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import com.google.common.testing.TestLogHandler;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.io.Serializable;

import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import com.google.common.testing.TestLogHandler;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.SettableFuture;
import com.google.common.util.concurrent.UncheckedExecutionException;
import java.io.Serializable;