System.setProperty("fess.dictionary.path", originalPath);
            }
        }
    }

    @Test
    public void testLoadJsonResourceWithDictionaryPath_emptyPath() throws IOException {
        // Clear the dictionary path property
        String originalPath = System.getProperty("fess.dictionary.path", "");

        try {
            System.clearProperty("fess.dictionary.path");

   *
   * <p>This is equivalent to {@code remove(Range.all())}.
   *
   * @throws UnsupportedOperationException if this range set does not support the {@code clear}
   *     operation
   */
  void clear();

  /**
   * Adds all of the ranges from the specified range set to this range set (optional operation).
   * After this operation, this range set is the minimal range set that {@linkplain

        }
      };
    }

    @Override
    public final int size() {
      return biMap.size;
    }

    @Override
    public final void clear() {
      biMap.clear();
    }
  }

  @LazyInit private transient Set<K> keySet;

  @Override
  public Set<K> keySet() {
    Set<K> result = keySet;

 * bound. However, it would also let them create `new TypeParameter<@Nullable T>() {}`, which
 * wouldn't behave as users might expect. Additionally, it's not clear how the TypeToken API could
 * support even a "normal" `TypeParameter<T>` when `<T>` has a nullable bound. (See the discussion
 * on TypeToken.where.) So, in the interest of failing fast and encouraging the user to switch to a

        
        if (response.isSuccess()) {
            parseNetworkInterfaces(response.getOutputData());
        }
    }
    
    private void parseNetworkInterfaces(byte[] data) {
        remoteInterfaces.clear();
        int offset = 0;
        
        while (offset < data.length) {
            // Parse NETWORK_INTERFACE_INFO structure
            int next = readInt4(data, offset);

    } finally {
      tearDown();
    }
  }

  @Override
  protected void tearDown() {
    tearDownStack.runTearDown();
  }

  /** Builds a {@link TearDownStack} that makes sure it's clear by the end of this test. */
  private TearDownStack buildTearDownStack() {
    TearDownStack result = new TearDownStack();
    tearDownStack.addTearDown(
        () -> {
          synchronized (result.lock) {

    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }
    }

    @Override
    public void clear() {
      synchronized (mutex) {
        delegate().clear();
      }
    }

    @Override
    public boolean contains(@Nullable Object o) {
      synchronized (mutex) {
        return delegate().contains(o);
      }
    }

    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }
    }

    @Override
    public void clear() {
      synchronized (mutex) {
        delegate().clear();
      }
    }

    @Override
    public boolean contains(@Nullable Object o) {
      synchronized (mutex) {
        return delegate().contains(o);
      }
    }

   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip a line
  public @Nullable String readLine() throws IOException {
    while (lines.peek() == null) {
      Java8Compatibility.clear(cbuf);
      // The default implementation of Reader#read(CharBuffer) allocates a
      // temporary char[], so we call Reader#read(char[], int, int) instead.

    throw up();
  }

  @Override
  public boolean retainAll(Collection<?> elementsToRetain) {
    throw up();
  }

  @Override
  public void clear() {
    throw up();
  }

  private static UnsupportedOperationException up() {
    throw new UnsupportedOperationException();
  }