}
        remaining--;
        /*
         * requireNonNull is safe because `remaining` starts at 0, forcing us to initialize
         * `element` above. After that, we never clear it.
         */
        return requireNonNull(element);
      }
    };
  }

  @LazyInit private transient @Nullable ImmutableList<E> asList;

  @Override
  public ImmutableList<E> asList() {

            final Matcher matcher = pattern.matcher(line);
            if (matcher.matches()) {
                if (lineNum == 0) {
                    lineNum = Integer.parseInt(matcher.group(1));
                    list.clear();
                }
                list.add(matcher.group(2));
            } else {
                list.add(line);
            }
        }
        if (lineNum == 0 || list.isEmpty()) {

      sleepMicros("R", micros);
    }

    String readEventsAndClear() {
      try {
        return events.toString();
      } finally {
        events.clear();
      }
    }

    @Override
    public String toString() {
      return events.toString();
    }
  }

  @AndroidIncompatible // Mockito loses its ability to mock doGetRate as of Android 21

         * annotations. This is intentional. The semantics of annotation handling during
         * type resolution are unclear and have changed across Java versions. Until there's
         * a clear specification for what annotations should mean on resolved TypeVariables
         * with modified bounds, annotation methods will throw
         * UnsupportedOperationException. Frameworks requiring annotation preservation

      monitor.leave();
    }
  }

  /**
   * Atomically removes all of the elements from this queue. The queue will be empty after this call
   * returns.
   */
  @Override
  public void clear() {
    E[] items = this.items;
    Monitor monitor = this.monitor;
    monitor.enter();
    try {
      int i = takeIndex;
      int k = count;
      while (k-- > 0) {
        items[i] = null;

      sleepMicros("R", micros);
    }

    String readEventsAndClear() {
      try {
        return events.toString();
      } finally {
        events.clear();
      }
    }

    @Override
    public String toString() {
      return events.toString();
    }
  }

  @AndroidIncompatible // Mockito loses its ability to mock doGetRate as of Android 21

     *
     * @param flag the flags to add
     */
    public final void addFlags(final int flag) {
        this.flags |= flag;
    }

    /**
     * Clears the specified flags from this message.
     *
     * @param flag the flags to clear
     */
    public final void clearFlags(final int flag) {
        this.flags &= ~flag;
    }

    /**
     * @return the mid
     */
    @Override

   *   <li>If {@code C} doesn't explicitly implement {@code equals} but instead inherits it from a
   *       superclass, no equality check is done on the deserialized instance because it's not clear
   *       whether the author intended for the class to be a value type.
   *   <li>If a constructor or factory method takes a parameter whose type is interface, a dynamic

            int len;
            int amount = 0;
            while ((len = ChannelUtil.read(channel, buffer, amount)) != -1) {
                out.write(buf, 0, len);
                buffer.clear();
                amount += len;
            }
            out.flush();
            return amount;
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }

        } finally {
            lock.writeLock().unlock();
        }
    }
    
    public void invalidate() {
        lock.writeLock().lock();
        try {
            children.clear();
            isComplete = false;
            hasChanges = true;
        } finally {
            lock.writeLock().unlock();
        }
    }
}
```

### 4.3 Directory Lease Manager
```java