assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutTwoElements() {
    int size = getNumElements();

    List<V> values = copyToList(multimap().get(k0()));

    assertTrue(multimap().put(k0(), v1()));
    assertTrue(multimap().put(k0(), v2()));

    values.add(v1());
    values.add(v2());

    assertGet(k0(), values);

    assertEquals(size + 1, multimap().size());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutTwoElements() {
    int size = getNumElements();

    List<V> values = copyToList(multimap().get(k0()));

    assertTrue(multimap().put(k0(), v1()));
    assertTrue(multimap().put(k0(), v2()));

    values.add(v1());
    values.add(v2());

    assertGet(k0(), values);

    }

    // Helper method to get the singleton instance via reflection for assertion
    private Object getSingletonInstanceViaReflection() {
        try {
            Field instance = SingletonContext.class.getDeclaredField("INSTANCE");
            instance.setAccessible(true);
            return instance.get(null);
        } catch (NoSuchFieldException | IllegalAccessException e) {

   * toString} methods for the multimap and its returned views. The multimap's {@code get}, {@code
   * removeAll}, and {@code replaceValues} methods return {@code RandomAccess} lists if the factory
   * does. However, the multimap's {@code get} method returns instances of a different class than
   * does {@code factory.get()}.
   *
   * <p>The multimap is serializable if {@code map}, {@code factory}, the lists generated by {@code

   * toString} methods for the multimap and its returned views. The multimap's {@code get}, {@code
   * removeAll}, and {@code replaceValues} methods return {@code RandomAccess} lists if the factory
   * does. However, the multimap's {@code get} method returns instances of a different class than
   * does {@code factory.get()}.
   *
   * <p>The multimap is serializable if {@code map}, {@code factory}, the lists generated by {@code

											<input type="text" id="tags.${f:h(nameKey)}" name="tags.${f:h(nameKey)}" value="${f:h(savedTags.get(nameKey))}" class="form-control" placeholder="Name" >
										</div>
										<div class="col-sm-6">
											<input type="text" id="tags.${f:h(valueKey)}" name="tags.${f:h(valueKey)}" value="${f:h(savedTags.get(valueKey))}" class="form-control" placeholder="Value" >
										</div>
									</div>
									</c:forEach>

    CHEAP {
      @Override
      public Comparator<Integer> get() {
        return Ordering.natural();
      }
    },
    EXPENSIVE {
      @Override
      public Comparator<Integer> get() {
        return Ordering.natural().onResultOf(new ExpensiveComputation());
      }
    };

    public abstract Comparator<Integer> get();
  }

        when(filterConfig.getInitParameterNames()).thenReturn(Collections.enumeration(initParams.keySet()));
        when(filterConfig.getInitParameter(anyString())).thenAnswer(invocation -> initParams.get(invocation.getArgument(0)));

        assertDoesNotThrow(() -> filter.init(filterConfig));
    }

    @Test
    void testInit_withMinimalConfig() throws ServletException {

            this.nextRetryTime = failureTime + 1000; // Initial 1 second delay
        }

        /**
         * Get channel ID
         *
         * @return channel identifier
         */
        public String getChannelId() {
            return channelId;
        }

        /**
         * Get failure time
         *
         * @return time of first failure
         */
        public long getFailureTime() {

        return stream(getPermissions()).get(stream -> stream.filter(s -> s.startsWith(fessConfig.getRoleSearchRolePrefix()))
                .map(s -> s.substring(1))
                .toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();