* <p><b>Warning:</b> a new random seed for these functions is chosen each time the {@code
   * Hashing} class is loaded. <b>Do not use this method</b> if hash codes may escape the current
   * process in any way, for example being sent over RPC, or saved to disk. For a general-purpose,
   * non-cryptographic hash function that will never change behavior, we suggest {@link
   * #murmur3_128}.
   *

      first = false;
      if (o == collection) {
        sb.append("(this Collection)");
      } else {
        sb.append(o);
      }
    }
    return sb.append(']').toString();
  }

  /** Returns best-effort-sized StringBuilder based on the given collection size. */
  static StringBuilder newStringBuilderForCollection(int size) {
    checkNonnegative(size, "size");

   * precise conditions for skipping the copy operation are undefined.
   *
   * @throws NullPointerException if any of {@code elements} is null
   * @since 7.0 (source-compatible since 2.0)
   */
  // This the best we could do to get copyOfEnumSet to compile in the mainline.
  // The suppression also covers the cast to E[], discussed below.
  // In the backport, we don't have those cases and thus don't need this suppression.

   * #newArrayListWithCapacity} (see that method for further advice on usage).
   *
   * <p><b>Note:</b> This method will soon be deprecated. Even in the rare case that you do want
   * some amount of padding, it's best if you choose your desired amount explicitly.
   *
   * @param estimatedSize an estimate of the eventual {@link List#size()} of the new list

    }
    // The future has already been set to something. If it is cancellation we should cancel the
    // incoming future.
    if (localValue instanceof Cancellation) {
      // we don't care if it fails, this is best-effort.
      future.cancel(((Cancellation) localValue).wasInterrupted);
    }
    return false;
  }

  /**
   * Returns a value that satisfies the contract of the {@link #value} field based on the state of

    // live
    table.set(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.removeLoadingValue(key, hash, valueRef));
    // no notification sent with removeLoadingValue
    assertTrue(map.removalNotificationQueue.isEmpty());
    assertEquals(0, segment.count);
    assertNull(table.get(0));

    // active
    Object value = new Object();

    // live
    table.set(0, entry);
    // don't increment count; this is used during computation
    assertTrue(segment.removeLoadingValue(key, hash, valueRef));
    // no notification sent with removeLoadingValue
    assertTrue(map.removalNotificationQueue.isEmpty());
    assertEquals(0, segment.count);
    assertNull(table.get(0));

    // active
    Object value = new Object();

   * implement shutdown and termination behavior.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing

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Guava is a set of core Java libraries from Google that includes new collection

      first = false;
      if (o == collection) {
        sb.append("(this Collection)");
      } else {
        sb.append(o);
      }
    }
    return sb.append(']').toString();
  }

  /** Returns best-effort-sized StringBuilder based on the given collection size. */
  static StringBuilder newStringBuilderForCollection(int size) {
    checkNonnegative(size, "size");