err = msgp.WrapError(err, "Error")
				return
			}
			zb0001Mask |= 0x4
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	// Clear omitted fields.
	if zb0001Mask != 0x7 {
		if (zb0001Mask & 0x1) == 0 {
			z.Index = nil
		}
		if (zb0001Mask & 0x2) == 0 {
			z.Checksums = nil
		}
		if (zb0001Mask & 0x4) == 0 {
			z.Error = ""

      .openConnection()
      .getInputStream() // Should succeed.
  }

  @Test
  fun clearDispatcherQueue() {
    server.enqueue(MockResponse(body = "A"))
    (server.dispatcher as QueueDispatcher).clear()
    server.enqueue(MockResponse(body = "B"))
    val inputStream =
      server
        .url("/a")
        .toUrl()
        .openConnection()
        .getInputStream()

      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

      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

            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()) {

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the table unmodified.
   *
   * @throws UnsupportedOperationException always

import org.codelibs.fess.unit.UnitFessTestCase;

public class ParameterUtilTest extends UnitFessTestCase {

    @Override
    public void setUp() throws Exception {
        super.setUp();
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getAppEncryptPropertyPattern() {
                return ".*password|.*key";
            }
        };

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void clear() {
    throw new UnsupportedOperationException();
  }

  /**
   * Returns an {@code ImmutableList} containing the same elements, in the same order, as this
   * collection.
   *

        } 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