import java.util.Optional;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * An interface for <a
 * href="https://en.wikipedia.org/wiki/Graph_(discrete_mathematics)">graph</a>-structured data,
 * whose edges are <a
 * href="https://github.com/google/guava/wiki/GraphsExplained#uniqueness">unique</a> objects.
 *
 * <p>A graph is composed of a set of nodes and a set of edges connecting pairs of nodes.
 *

        }
    }

    /**
     * Gets the new input words.
     *
     * @return The new input words.
     */
    public String[] getNewInputs() {
        return newInputs;
    }

    /**
     * Sets the new input words.
     *
     * @param newInputs The new input words.
     */
    public void setNewInputs(final String[] newInputs) {
        this.newInputs = newInputs;
    }

    /**

     */
    public AbstractTransformer() {
        // NOP
    }

    /**
     * The name of the transformer.
     */
    protected String name;

    /**
     * Sets the name of the transformer.
     *
     * @param name the name to set
     */
    public void setName(final String name) {
        this.name = name;
    }

    /**
     * Returns the name of the transformer.
     *

     */
    public static void shutdown(final String[] args) {
        System.exit(0);
    }

    /**
     * Checks if the lasta.env system property is not set.
     *
     * @return true if lasta.env is not set, false otherwise
     */
    private static boolean isNoneEnv() {
        return System.getProperty("lasta.env") == null;
    }

    /**

	bucketCh := make(chan BucketInfo, len(buckets))

	// Shuffle buckets to ensure total randomness of buckets, being scanned.
	// Otherwise same set of buckets get scanned across erasure sets always.
	// at any given point in time. This allows different buckets to be scanned
	// in different order per erasure set, this wider spread is needed when
	// there are lots of buckets with different order of objects in them.

     * @return the property value
     */
    <T> T getValue(Object target);

    /**
     * Sets the value of the property.
     *
     * @param target
     *            the target object. Must not be {@literal null}
     * @param value
     *            the value to set to the property
     */
    void setValue(Object target, Object value);

    /**

    }

    // Each of the values added to the map should either still be there, or have seen a removal
    // notification.
    assertEquals(expectedKeys, Sets.union(cache.asMap().keySet(), removalNotifications.keySet()));
    assertTrue(Sets.intersection(cache.asMap().keySet(), removalNotifications.keySet()).isEmpty());
    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);
  }

  /**

    }

    // Each of the values added to the map should either still be there, or have seen a removal
    // notification.
    assertEquals(expectedKeys, Sets.union(cache.asMap().keySet(), removalNotifications.keySet()));
    assertTrue(Sets.intersection(cache.asMap().keySet(), removalNotifications.keySet()).isEmpty());
    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);
  }

  /**

	tracker.setQueuedBuckets(buckets)
	if err := tracker.save(ctx); err != nil {
		return err
	}

	// Start or resume healing of this erasure set
	if err = z.serverPools[poolIdx].sets[setIdx].healErasureSet(ctx, tracker.QueuedBuckets, tracker); err != nil {
		return err
	}

	// if objects have failed healing, we attempt a retry to heal the drive upto 3 times before giving up.

      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {
    return Sets.filter(unfiltered.keySet(), keyPredicate);
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    if (keyPredicate.apply(key)) {
      return unfiltered.get(key);