* is mutable (as CWD may be changed), but allows transition only to existing directories.
 */
public final class CWD implements Supplier<Path> {
    /**
     * Creates instance out of {@link Path}.
     */
    public static CWD create(Path path) {
        return new CWD(CliUtils.getCanonicalPath(path));
    }

    private Path directory;

    private CWD(Path directory) {
        this.directory = directory;

    if (first != null) {
      return first;
    }
    if (second != null) {
      return second;
    }
    throw new NullPointerException("Both parameters are null");
  }

  /**
   * Creates an instance of {@link ToStringHelper}.
   *
   * <p>This is helpful for implementing {@link Object#toString()}. Specification by example:
   *
   * {@snippet :
   * // Returns "ClassName{}"

 *
 * OkHttp performs best when you create a single `OkHttpClient` instance and reuse it for all of
 * your HTTP calls. This is because each client holds its own connection pool and thread pools.
 * Reusing connections and threads reduces latency and saves memory. Conversely, creating a client
 * for each request wastes resources on idle pools.
 *
 * Use `new OkHttpClient()` to create a shared instance with the default settings:
 *

            new TestStringSortedMapGenerator() {
              @Override
              protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                /*
                 * TODO(cpovirk): it would be nice to create an input Map and use
                 * the copy constructor here and in the other tests
                 */

    /**
     * Creates a new empty witness notification.
     */
    public WitnessNotification() {
        this.timestamp = System.currentTimeMillis();
        this.newIPAddresses = new ArrayList<>();
        this.oldIPAddresses = new ArrayList<>();
        this.flags = WITNESS_RESOURCE_STATE_UNKNOWN;
    }

    /**
     * Creates a new witness notification.
     *

_2016-01-07_

 *  Fix: Don't eagerly release stream allocations on cache hits. We might still
    need them to handle redirects.


## Version 2.7.1

_2016-01-01_

 *  Fix: Don't do a health check on newly-created connections. This is
    unnecessary work that could put the client in an inconsistent state if the
    health check fails.


## Version 2.7.0

_2015-12-13_

                }
            }

            // Create new transport
            SmbTransport newTransport = manager.createTransport(channel.getLocalInterface(), channel.getRemoteInterface());

            // Check if transport creation failed
            if (newTransport == null) {
                throw new IOException("Failed to create new transport");
            }

            // Reconnect

  // TODO(lowasser): implement removeEldestEntry so this can be used as a drop-in replacement

  /** Creates an empty {@code CompactLinkedHashMap} instance. */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      CompactLinkedHashMap<K, V> create() {
    return new CompactLinkedHashMap<>();
  }

  /**
   * Creates a {@code CompactLinkedHashMap} instance, with a high enough "initial capacity" that it

  @CollectionSize.Require(absent = {ZERO, ONE})
  public void testRetainAll_duplicatesKept() {
    E[] array = createSamplesArray();
    array[1] = e0();
    collection = getSubjectGenerator().create(array);
    assertFalse(
        "containsDuplicates.retainAll(superset) should return false",
        collection.retainAll(MinimalCollection.of(createSamplesArray())));
    expectContents(array);
  }

     */
    private final String simpleMessage;

    /**
     * Creates {@link ClRuntimeException}.
     *
     * @param messageCode message code
     */
    public ClRuntimeException(final String messageCode) {
        this(messageCode, new Object[0], null);
    }

    /**
     * Creates {@link ClRuntimeException}.
     *
     * @param messageCode message code