Map<String, List<String>> allHeaders = headers != null ? new HashMap<>(headers) : new HashMap<>();
        allHeaders.put(null, Collections.singletonList(statusLine)); // Status line
        when(conn.getHeaderFields()).thenReturn(allHeaders);

        // Mock individual header access by both string key and index
        if (headers != null) {
            // Mock by header name

            sids[si].origin_server = null;
            sids[si].origin_auth = null;
        }
    }

    static void resolveSids0(final String authorityServerName, final NtlmPasswordAuthentication auth, final SID[] sids) throws IOException {
        DcerpcHandle handle = null;
        LsaPolicyHandle policyHandle = null;

        synchronized (sid_cache) {
            try {

      int size = (keyList == null) ? 0 : keyList.count;
      checkPositionIndex(index, size);
      if (index >= (size / 2)) {
        previous = (keyList == null) ? null : keyList.tail;
        nextIndex = size;
        while (index++ < size) {
          previous();
        }
      } else {
        next = (keyList == null) ? null : keyList.head;
        while (index-- > 0) {
          next();

        // For this test, we'll focus on the documentExpires fallback logic
        // since creating full CrawlingConfig mocks would require implementing many abstract methods
        Date result = crawlingInfoHelper.documentExpires != null ? new Date(crawlingInfoHelper.documentExpires) : null;
        assertNotNull(result);
        assertEquals(currentTime + 5000, result.getTime());
    }

                }
            }
        }
        return null;
    }

    private String getError(File touchFile, String key) {
        Properties props = read(touchFile);
        if (props != null) {
            return props.getProperty(key + ERROR_KEY_SUFFIX);
        }
        return null;
    }

    private Properties read(File touchfile) {
        if (!touchfile.canRead()) {

            }
        }
        return null;
    }

    /**
     * Check if the response contains any durable handle context
     * @return true if durable handle context is present
     */
    public boolean hasDurableHandleResponse() {
        return getDurableHandleResponse() != null || getDurableHandleV2Response() != null || getDurableHandleReconnectResponse() != null;
    }

    /**
     * {@inheritDoc}

        OptionalThing<Locale> result = provider.findBusinessLocale(null, mockRequestManager);

        // Verify - should return empty when parameter name is blank
        assertFalse(result.isPresent());
    }

    // Test findBusinessLocale with null parameter name
    public void test_findBusinessLocale_withNullParameterName() {
        // Setup mock config with null parameter name

      return;
    }

    map.put(null, unmappedValue);
    assertEquals(unmappedValue, map.get(null));
    assertTrue(map.containsKey(null));
    Entry<@Nullable K, V> entry = mapEntry(null, unmappedValue);
    assertTrue(entrySet.remove(entry));
    assertNull(map.get(null));
    assertFalse(map.containsKey(null));
  }

  public void testEntrySetRemoveNullKeyMissing() {

        doUpdate(entity, null);
    }

    public void insertOrUpdate(FileAuthentication entity) {
        doInsertOrUpdate(entity, null, null);
    }

    public void insertOrUpdate(FileAuthentication entity, RequestOptionCall<IndexRequestBuilder> opLambda) {
        entity.asDocMeta().indexOption(opLambda);
        doInsertOrUpdate(entity, null, null);
    }

    for (LoadingCache<Object, Object> cache : caches()) {
      Set<Object> keys = cache.asMap().keySet();
      assertFalse(keys.remove(null));
      assertFalse(keys.remove(6));
      assertFalse(keys.remove(-6));
      assertFalse(keys.removeAll(asList(null, 0, 15, 1500)));
      assertFalse(keys.retainAll(asList(null, 0, 15, 1500)));
      checkEmpty(keys);
      checkEmpty(cache);
    }
  }

  public void testKeySet_remove() {