@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);

        final String error = getValidationError();
        if (!Strings.isNullOrEmpty(error)) {
            throw new IllegalArgumentException(error);
        }

        final Deferred<T> deferred = new Deferred<>();
        try {
            processRequest(client, deferred);
        } catch (final Exception e) {
            throw new SuggesterException(e);
        }
        return deferred.promise();
    }

    /**

                throw new CIFSException("Failed to create any channels for session " + sessionId);
            }

            log.info("Created {} channels for session {}", channelGroup.getChannelCount(), sessionId);
            return channelGroup;

        } catch (Exception e) {
            sessionChannels.remove(sessionId);

                    } catch (final IOException e) {
                        throw new IORuntimeException(e);
                    }
                    logFileItems.add(map);
                });
            } catch (final Exception e) {
                throw new FessSystemException("Failed to access log files.", e);
            }
        }
        return logFileItems;
    }

  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testRemove_unsupportedNotPresent() {
    try {
      assertFalse(
          "remove(notPresent) should return false or throw UnsupportedOperationException",
          collection.remove(e3()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
    expectMissing(e3());
  }

      throw new RuntimeException("bad constructor");
    }

    public ExceptionWithGoodAndBadConstructor(Throwable cause) {
      super(cause);
    }
  }

  static final class ExceptionWithBadConstructor extends Exception {
    public ExceptionWithBadConstructor(String message, Throwable cause) {
      throw new RuntimeException("bad constructor");
    }
  }

    Class<?>
        clazz = enumValue.getDeclaringClass();
    try {
      return clazz.getDeclaredField(enumValue.name());
    } catch (NoSuchFieldException impossible) {
      throw new AssertionError(impossible);
    }
  }

  /**
   * Returns an optional enum constant for the given type, using {@link Enum#valueOf}. If the

            UniAddress dc = mock(UniAddress.class);
            when(dc.toString()).thenReturn("ANYSERVER");

            NtlmChallenge nc = new NtlmChallenge(null, dc);

            // Hexdump.toHexString will throw NPE when accessing challenge.length
            assertThrows(NullPointerException.class, nc::toString);
        }

        @Test
        @DisplayName("toString with null dc throws NPE")

            BaseConfiguration config = new BaseConfiguration(false);
            mockContext = new BaseContext(config);
            response = new SmbComNegotiateResponse(mockContext);
        } catch (Exception e) {
            throw new RuntimeException("Failed to set up test", e);
        }
    }

    @Test
    public void testConstructor() {
        assertNotNull(response);

  }

  /**
   * Guaranteed to throw an exception and leave the multimap unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final ImmutableList<V> removeAll(@Nullable Object key) {
    throw new UnsupportedOperationException();
  }