/guava/android/guava/src/com/google/common/cache/LocalCache.java
this ( LocalCache.<K, V>unset ( ) ) ;
static class LoadingValueReference<K, V> implements ValueReference<K, V> { volatile ValueReference<K, V> oldValue; final SettableFuture<V> futureValue = SettableFuture.create(); final Stopwatch stopwatch = Stopwatch.createUnstarted(); final Thread loadingThread; public LoadingValueReference() { <extra_id_0> } public LoadingValueReference(ValueReference<K, V> oldValue) { this.oldValue = oldValue; this.loadingThread = Thread.currentThread(); } @Override