protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }

    node.thread = null; // mark as 'deleted'
    restart:
    while (true) {
      Waiter pred = null;
      Waiter curr = waitersField;
      if (curr == Waiter.TOMBSTONE) {
        return; // give up if someone is calling complete
      }
      Waiter succ;
      while (curr != null) {
        succ = curr.next;
        if (curr.thread != null) { // we aren't unlinking this node, update pred.

                null, null, null))
        .addEqualityGroup(
            Tables.<String, @Nullable Object, @Nullable Object>immutableCell("bar", null, null))
        .addEqualityGroup(
            Tables.<@Nullable Object, Integer, @Nullable Object>immutableCell(null, 2, null))
        .addEqualityGroup(
            Tables.<@Nullable Object, @Nullable Object, Character>immutableCell(null, null, 'b'))

  /**
   * Creates a new instance with {@code null} as its detail message and no cause.
   *
   * @deprecated Prefer {@linkplain UncheckedExecutionException(Throwable)} a constructor that
   *     accepts a cause: Users of this class typically expect for instances to have a non-null
   *     cause. At the moment, you can <i>usually</i> still preserve behavior by passing an explicit

                    if (cresp != null && cresp.isReceived()) {
                        return (T) cresp;
                    }
                    if (chain != null) {
                        return this.transport.send(chain, null, params);
                    }
                    return null;
                }
            }
        }

        srvsvc.ShareInfo0 shareInfo0 = new srvsvc.ShareInfo0();
        shareInfo0.netname = null;

        shareInfo0.encode(mockNdrBuffer);

        // Verify the encode operations
        verify(mockNdrBuffer).align(4);
        verify(mockNdrBuffer).enc_ndr_referent(null, 1);
        // Should not encode string if netname is null
        verify(mockDeferredBuffer, never()).enc_ndr_string(anyString());
    }

    @Test

    /**
     * Get existing handle data for reconnection
     * @param path the file path
     * @return the file ID if available, null otherwise
     */
    public byte[] getExistingHandle(String path) {
        HandleInfo info = getHandleForReconnect(path);
        return info != null ? info.getFileId() : null;
    }

    /**
     * Store handle information after successful create
     * @param path the file path

     */
    public static String toString(final Object obj) {
        return obj == null ? null : obj.toString();
    }

    /**
     * Returns the object, or the defaultValue if the object is <code>null</code>.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * ObjectUtil.defaultValue(null, "NULL")  = "NULL"
     * ObjectUtil.defaultValue(null, 1)    = 1

        final String suppliedWorkstation = getSuppliedWorkstation();
        return "Type1Message[suppliedDomain=" + (suppliedDomain == null ? "null" : suppliedDomain) + ",suppliedWorkstation="
                + (suppliedWorkstation == null ? "null" : suppliedWorkstation) + ",flags=0x"
                + jcifs.smb1.util.Hexdump.toHexString(getFlags(), 8) + "]";
    }

    /**

    if (entry != null && entry.key == key) {
      return entry.value;
    }
    entry = cacheEntry2;
    if (entry != null && entry.key == key) {
      // Promote second cache entry to first so the access pattern
      // [K1, K2, K1, K3, K1, K4...] still hits the cache half the time.
      addToCache(entry);
      return entry.value;
    }
    return null;
  }

  @Override
  void clearCache() {
    super.clearCache();