package com.google.common.base; import java.lang.ref.PhantomReference; import javax.annotation.CheckForNull; @ElementTypesAreNonnullByDefault public abstract class FinalizablePhantomReference<T> extends PhantomReference<T> implements FinalizableReference { protected FinalizablePhantomReference(@CheckForNull T t, FinalizableReferenceQueue finalizableReferenceQueue) { super(t, finalizableReferenceQueue.queue); finalizableReferenceQueue.cleanUp(); } }Download file