import java.util.logging.Level;
import java.util.logging.Logger;
import org.jspecify.annotations.Nullable;

/**
 * A reference queue with an associated background thread that dequeues references and invokes
 * {@link FinalizableReference#finalizeReferent()} on them. Java 9+ users should prefer {@link
 * java.lang.ref.Cleaner Cleaner}; see example <a href="#cleaner">below</a>.
 *

import java.util.logging.Level;
import java.util.logging.Logger;
import org.jspecify.annotations.Nullable;

/**
 * A reference queue with an associated background thread that dequeues references and invokes
 * {@link FinalizableReference#finalizeReferent()} on them. Java 9+ users should prefer {@link
 * java.lang.ref.Cleaner Cleaner}; see example <a href="#cleaner">below</a>.
 *

    Object referent = new Object();
    FinalizableReference.register(referent, finalizerRan);
    return new WeakReference<>(referent);
  }

  private static final class FinalizableReference extends FinalizablePhantomReference<Object> {
    static final FinalizableReferenceQueue referenceQueue = new FinalizableReferenceQueue();
    static final Set<FinalizableReference> references = newConcurrentHashSet();

    Object referent = new Object();
    FinalizableReference.register(referent, finalizerRan);
    return new WeakReference<>(referent);
  }

  private static final class FinalizableReference extends FinalizablePhantomReference<Object> {
    static final FinalizableReferenceQueue referenceQueue = new FinalizableReferenceQueue();
    static final Set<FinalizableReference> references = newConcurrentHashSet();

    if (resetWhenGarbageCollected) {
      FinalizableReference.register(byteSource);
    }
  }

  private static final class FinalizableReference extends FinalizablePhantomReference<ByteSource> {
    static final FinalizableReferenceQueue referenceQueue = new FinalizableReferenceQueue();
    static final Set<FinalizableReference> references = newConcurrentHashSet();