FessActionAdjustmentProvider provider = new FessActionAdjustmentProvider(fessConfig);
        final Map<String, String> headerMap = new HashMap<>();
        provider.adjustActionResponseHeaders("text/plain", (k, v) -> headerMap.put(k, v));

        assertEquals(0, headerMap.size());
    }

    public void test_write_defaultHeadersOnly() throws Exception {

      }
      return Range.create(lowerBound, upperBound);
    }

    @Override
    public void put(Range<K> range, V value) {
      checkArgument(
          subRange.encloses(range), "Cannot put range %s into a subRangeMap(%s)", range, subRange);
      TreeRangeMap.this.put(range, value);
    }

    @Override
    public void putCoalescing(Range<K> range, V value) {

        context.put("thread", Thread.currentThread().getName());
        context.put("threadId", Thread.currentThread().getId());

        String sessionId = MDC.get("sessionId");
        if (sessionId != null) {
            context.put("sessionId", sessionId);
        }
        String userId = MDC.get("userId");
        if (userId != null) {
            context.put("userId", userId);
        }
    }

    assertThrows(UnsupportedOperationException.class, () -> table.put("foo", 1, 'a'));
    assertSize(0);
  }

  @Override
  public void testPutAllTable() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    Table<String, Integer, Character> other = HashBasedTable.create();
    other.put("foo", 1, 'd');
    other.put("bar", 2, 'e');
    other.put("cat", 2, 'f');

  }

  protected void populate(Multimap<String, Integer> multimap) {
    multimap.put("one", 1);
    multimap.put("two", 2);
    multimap.put("two", 22);
    multimap.put("three", 3);
    multimap.put("three", 33);
    multimap.put("three", 333);
  }

  @Override
  protected String getKeyNotInPopulatedMap() throws UnsupportedOperationException {
    return "zero";
  }

        source.put(FieldNames.TEXT, "parsed text");
        source.put(FieldNames.QUERY_FREQ, 75L);
        source.put(FieldNames.DOC_FREQ, 35L);
        source.put(FieldNames.USER_BOOST, 2.0f);
        source.put(FieldNames.READING_PREFIX + "0", Arrays.asList("reading1", "reading2"));
        source.put(FieldNames.READING_PREFIX + "1", Arrays.asList("reading3"));
        source.put(FieldNames.FIELDS, Arrays.asList("field1"));

        Map<String, String> mapWithNulls = new HashMap<>();
        mapWithNulls.put(null, null);
        assertEquals(0L, MemoryUtil.sizeOf(mapWithNulls));

        // Map with mixed content
        Map<Object, Object> mixedMap = new HashMap<>();
        mixedMap.put("key", "value");
        mixedMap.put(123, 456);
        mixedMap.put(null, "test");
        assertEquals(228L, MemoryUtil.sizeOf(mixedMap));

  }

  @Override
  protected Map<String, Integer> makePopulatedMap() {
    Table<Character, String, Integer> table = HashBasedTable.create();
    table.put('a', "one", 1);
    table.put('a', "two", 2);
    table.put('a', "three", 3);
    table.put('b', "four", 4);
    return unmodifiableTable(table).row('a');
  }

  }

  @Override
  protected Map<String, Integer> makePopulatedMap() {
    Table<String, Character, Integer> table = HashBasedTable.create();
    table.put("one", 'a', 1);
    table.put("two", 'a', 2);
    table.put("three", 'a', 3);
    table.put("four", 'b', 4);
    return transformValues(table, DIVIDE_BY_2).column('a');
  }

  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    Table<Integer, String, String> table = HashBasedTable.create();
    table.put(1, "foo", "apple");
    table.put(1, "bar", "banana");
    table.put(3, "foo", "cat");
    return transformValues(table, FIRST_CHARACTER).columnMap();
  }