builder.interceptors().addAll(listOf(null) as List<Interceptor>)
    assertFailsWith<IllegalStateException> {
      builder.build()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Null interceptor: [null]")
    }
  }

  @Test fun nullNetworkInterceptorInList() {
    val builder = OkHttpClient.Builder()
    builder.networkInterceptors().addAll(listOf(null) as List<Interceptor>)

        HashMap<String, Object> source = new HashMap<>();
        assertFalse(fessConfig.validateIndexRequiredFields(source));
        source.put("aaa", null);
        assertFalse(fessConfig.validateIndexRequiredFields(source));
        source.put("aaa", null);
        source.put("bbb", null);
        assertFalse(fessConfig.validateIndexRequiredFields(source));
        source.put("aaa", "");
        source.put("bbb", "");

        return builder()
                .session(nonNull(session, "session cannot be null"))
                .artifactCoordinates(nonNull(artifactCoordinates, "artifactCoordinates cannot be null"))
                .build();
    }

    @Nonnull
    static VersionResolverRequest build(
            @Nonnull Session session,

     */
    public CumulativeScopeArtifactFilter(Collection<String> scopes) {
        this.scopes = new HashSet<>();

        addScopes(scopes);
    }

    /**
     * Creates a new filter that combines the specified filters.
     *
     * @param filters The filters to combine, may be {@code null}.
     */

            credentials = new NTCredentials(username, password == null ? StringUtil.EMPTY : password,
                    workstation == null ? StringUtil.EMPTY : workstation, domain == null ? StringUtil.EMPTY : domain);
        } else {
            credentials = new UsernamePasswordCredentials(username, password == null ? StringUtil.EMPTY : password);
        }
        return credentials;
    }

   * subclasses during deserialization.
   */
  void setDelegates(Map<K, V> forward, Map<V, K> backward) {
    checkState(delegate == null);
    checkState(inverse == null);
    checkArgument(forward.isEmpty());
    checkArgument(backward.isEmpty());
    checkArgument(forward != backward);
    delegate = forward;
    inverse = makeInverse(backward);
  }

    public DynamicProperties(final String path) {
        this(path == null ? null : new File(path));
    }

    public DynamicProperties(final Path path) {
        this(path == null ? null : path.toFile());
    }

    public DynamicProperties(final File file) {
        // check path
        if (file == null) {
            throw new FileAccessException("ECL0108");
        }

    @Test
    public void testContaines() throws Exception {
        assertThat(list.contains(null), is(not(true)));
        assertThat(list.contains("1"), is(not(true)));
        list.addLast("1");
        assertThat(list.contains("1"), is(true));
        assertThat(list.contains("2"), is(not(true)));
        assertThat(list.contains(null), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test

        String msg = req.getHeader("Authorization");
        if (msg != null && msg.startsWith("NTLM ")) {
            byte[] src = Base64.decode(msg.substring(5));
            if (src[8] == 1) {
                Type1Message type1 = new Type1Message(src);
                Type2Message type2 = new Type2Message(type1, challenge, null);
                msg = Base64.encode(type2.toByteArray());

        if (_conditionQuery != null) {
            QueryBuilder queryBuilder = _conditionQuery.getQuery();
            if (queryBuilder != null) {
                builder.setQuery(queryBuilder);
            }
            _conditionQuery.getFieldSortBuilderList().forEach(sort -> {
                builder.addSort(sort);
            });
        }

        if (_conditionAggregation != null) {