*
   * static final ListMultimap<Character, String> FIRST_LETTER_MULTIMAP;
   *
   * static {
   *     FIRST_LETTER_MULTIMAP = MultimapBuilder.treeKeys().arrayListValues().build();
   *     FIRST_LETTER_MULTIMAP.put('b', "anana");
   *     FIRST_LETTER_MULTIMAP.put('a', "pple");
   *     FIRST_LETTER_MULTIMAP.put('a', "sparagus");
   *     FIRST_LETTER_MULTIMAP.put('c', "arrot");
   *     FIRST_LETTER_MULTIMAP.put('c', "herry");
   * }

          return !mapEntry("banana", "toast").equals(entry)
              && !mapEntry("eggplant", "spam").equals(entry);
        }
      };

  static final Predicate<Entry<String, String>> FILTER_ENTRIES_1 =
      new Predicate<Entry<String, String>>() {
        @Override
        public boolean apply(Entry<String, String> entry) {
          return !mapEntry("banana", "toast").equals(entry);
        }
      };

   * are broken arbitrarily.
   *
   * <p>For example:
   *
   * {@snippet :
   * Stream.of("foo", "quux", "banana", "elephant")
   *     .collect(greatest(2, comparingInt(String::length)))
   * // returns {"elephant", "banana"}
   * }
   *
   * <p>This {@code Collector} uses O(k) memory and takes expected time O(n) (worst-case O(n log

        words.add("banana");
        words.add("cherry");

        PopularWordsResponse response = new PopularWordsResponse("test-index", 100, words, 10, new ArrayList<>());

        assertNotNull(response.getWords());
        assertEquals(3, response.getWords().size());
        assertTrue(response.getWords().contains("apple"));
        assertTrue(response.getWords().contains("banana"));

    peer.acceptFrame() // SYN_REPLY
    peer.sendFrame().pushPromise(3, 2, headerEntries("b", "banana"))
    peer.acceptFrame() // RST_STREAM
    peer.play()

    // Play it back.
    val connection = connect(peer)
    connection.newStream(headerEntries("b", "banana"), false)

    // Verify the peer received what was expected.
    assertThat(peer.takeFrame().type).isEqualTo(Http2.TYPE_HEADERS)

    val request = server.takeRequest()
    assertThat(request.headers["Cookie"]).isEqualTo("a=android; b=banana")
  }

  @Test
  fun receiveAndSendMultipleCookies() {
    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("Set-Cookie", "a=android")
        .addHeader("Set-Cookie", "b=banana")
        .build(),
    )
    server.enqueue(MockResponse())

                  @Override
                  public SampleElements<Entry<Range<Integer>, String>> samples() {
                    return new SampleElements<>(
                        mapEntry(Range.singleton(0), "banana"),
                        mapEntry(Range.closedOpen(3, 5), "frisbee"),
                        mapEntry(Range.atMost(-1), "fruitcake"),
                        mapEntry(Range.open(10, 15), "elephant"),

          return !mapEntry("banana", "toast").equals(entry)
              && !mapEntry("eggplant", "spam").equals(entry);
        }
      };

  static final Predicate<Entry<String, String>> FILTER_ENTRIES_1 =
      new Predicate<Entry<String, String>>() {
        @Override
        public boolean apply(Entry<String, String> entry) {
          return !mapEntry("banana", "toast").equals(entry);
        }
      };

  }

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

    }

    @Test
    @DisplayName("Should join with multi-character delimiter")
    void testJoinWithMultiCharDelimiter() {
        String result = StringUtil.join(" - ", "apple", "banana", "cherry");
        assertEquals("apple - banana - cherry", result);
    }

    @Test
    @DisplayName("Should handle null delimiter by inserting 'null' string")
    void testJoinWithNullDelimiter() {