public void testPutDuplicateValue() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());

    for (Entry<K, V> entry : entries) {
      resetContainer();

      K k = entry.getKey();
      V v = entry.getValue();

      List<V> values = multimap().get(k);
      List<V> expectedValues = copyToList(values);

      assertTrue(multimap().put(k, v));
      expectedValues.add(v);
      assertGet(k, expectedValues);

            result.setAttributes(source.entrySet()
                    .stream()
                    .filter(e -> isAttribute(e.getKey()))
                    .map(e -> new Pair<>(e.getKey(), (String) e.getValue()))
                    .collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)));
            return result;
        } catch (InstantiationException | IllegalAccessException e) {

  public void testPutDuplicateValue() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());

    for (Entry<K, V> entry : entries) {
      resetContainer();
      K k = entry.getKey();
      V v = entry.getValue();

      Set<V> values = multimap().get(k);
      Set<V> expectedValues = copyToSet(values);

      assertFalse(multimap().put(k, v));
      assertEquals(expectedValues, values);
      assertGet(k, expectedValues);

        try {
            List<String> list;
            csvReader.readValues(); // ignore header
            while ((list = csvReader.readValues()) != null) {
                String targetWord = getValue(list, 0);
                if (StringUtil.isBlank(targetWord)) {
                    // skip
                    continue;
                }
                try {
                    boolean isDelete = false;

                crawlingInfoParam.setCrawlingInfoId(crawlingInfo.getId());
                crawlingInfoParam.setKey(entry.getKey());
                crawlingInfoParam.setValue(entry.getValue());
                crawlingInfoParamList.add(crawlingInfoParam);
            }
            getCrawlingInfoService().storeInfo(crawlingInfoParamList);
        }

        infoMap = null;
    }

        final Properties props = new Properties(mailProperties);
        if (params != null) {
            for (final Map.Entry<String, String> entry : params.entrySet()) {
                props.put(entry.getKey(), entry.getValue());
            }
        }
        try {
            final Session mailSession = Session.getDefaultInstance(props, null);
            final MimeMessage message = new MimeMessage(mailSession, in);

            for (Map.Entry<Object, Object> e : t.entrySet()) {
                if (!e.getKey().equals(excludeKey)) {
                    s.put(e.getKey(), e.getValue());
                }
            }
        }

        @Override
        protected void mergePluginContainer_Plugins(

            result.setAttributes(source.entrySet()
                    .stream()
                    .filter(e -> !"name".equals(e.getKey()))
                    .map(e -> new Pair<>(e.getKey(), (String) e.getValue()))
                    .collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)));
            return result;
        } catch (InstantiationException | IllegalAccessException e) {

        }

        @Override
        public void remove() {
          checkState(entry != null, "no calls to next() since the last call to remove()");
          Collection<V> collection = entry.getValue();
          entryIterator.remove();
          totalSize -= collection.size();
          collection.clear();
          entry = null;
        }
      };
    }

  @Override
  protected final void assertMoreInvariants(Map<K, V> map) {
    // TODO: can these be moved to MapInterfaceTest?
    for (Entry<K, V> entry : map.entrySet()) {
      assertEquals(entry.getKey() + "=" + entry.getValue(), entry.toString());
    }

    assertEquals("{" + JOINER.join(map.entrySet()) + "}", map.toString());
    assertEquals("[" + JOINER.join(map.entrySet()) + "]", map.entrySet().toString());