throw new DictionaryException("Failed to write: " + oldItem + " -> " + item, e);
            }
        }

        public void write(final String line) {
            try {
                writer.write(line);
                writer.write(Constants.LINE_SEPARATOR);
            } catch (final IOException e) {
                throw new DictionaryException("Failed to write: " + line, e);

    unfiltered.put("two", 2);
    unfiltered.put("three", 3);
    unfiltered.put("four", 4);
    assertEquals(ImmutableMap.of("two", 2, "three", 3, "four", 4), unfiltered);
    assertEquals(ImmutableMap.of("three", 3, "four", 4), filtered);

    unfiltered.remove("three");
    assertEquals(ImmutableMap.of("two", 2, "four", 4), unfiltered);

                }
            }
            return null;
        } catch (InvocationTargetException e) {
            throw new IntrospectionException(e.getTargetException());
        } catch (AmbiguousException | IllegalAccessException e) {
            throw new IntrospectionException(e);
        }
    }

    private static ClassMap getClassMap(Class<?> clazz) {

            userSettingsFile = resolveFile(userSettingsFile, workingDirectory);

            if (!userSettingsFile.isFile()) {
                throw new FileNotFoundException("The specified user settings file does not exist: " + userSettingsFile);
            }
        } else {
            userSettingsFile = DEFAULT_USER_SETTINGS_FILE;
        }

    @Override
    public int previousIndex() {
      return nextIndex - 1;
    }

    @Override
    public void set(Entry<K, V> e) {
      throw new UnsupportedOperationException();
    }

    @Override
    public void add(Entry<K, V> e) {
      throw new UnsupportedOperationException();
    }

    void setValue(@ParametricNullness V value) {
      checkState(current != null);

        setAlpnProtocols.invoke(
          sslSocket,
          Platform.concatLengthPrefixed(protocols),
        )
      } catch (e: IllegalAccessException) {
        throw AssertionError(e)
      } catch (e: InvocationTargetException) {
        throw AssertionError(e)
      }
    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    // No TLS extensions if the socket class is custom.

   */
  operator fun hasNext(): Boolean = hasNextProxy() || postponedRoutes.isNotEmpty()

  @Throws(IOException::class)
  operator fun next(): Selection {
    if (!hasNext()) throw NoSuchElementException()

    // Compute the next set of routes to attempt.
    val routes = mutableListOf<Route>()
    while (hasNextProxy()) {

          return null;
        }

        @Override
        public Range<Comparable<?>> span() {
          throw new NoSuchElementException();
        }

        @Override
        public void put(Range<Comparable<?>> range, Object value) {
          checkNotNull(range);
          throw new IllegalArgumentException(
              "Cannot insert range " + range + " into an empty subRangeMap");
        }

    source: Path,
    target: Path,
  ) {
    if (renameFaults.contains(source) || renameFaults.contains(target)) throw IOException("boom!")
    super.atomicMove(source, target)
  }

  @Throws(IOException::class)
  override fun delete(
    path: Path,
    mustExist: Boolean,
  ) {
    if (deleteFaults.contains(path)) throw IOException("boom!")
    super.delete(path, mustExist)
  }

  @Throws(IOException::class)

      actions += { stream ->
        val actual = stream.requestBody.readUtf8(expected.utf8Size())
        if (actual != expected) throw AssertionError("$actual != $expected")
      }
    }

  fun exhaustRequest() =
    apply {
      actions += { stream ->
        if (!stream.requestBody.exhausted()) throw AssertionError("expected exhausted")
      }
    }

  fun cancelStream() =
    apply {