return delegate.pollFirstEntry();
  }

  @Override
  public @Nullable Entry<K, V> pollLastEntry() {
    return delegate.pollLastEntry();
  }

  @Override
  public @Nullable V put(K key, V value) {
    return delegate.put(checkValid(key), value);
  }

  @Override
  public void putAll(Map<? extends K, ? extends V> map) {
    for (K key : map.keySet()) {
      checkValid(key);
    }

Directory for library extension

If you use a database that DBFlute does not have its JDBC driver,
put your own JDBC driver for the database here.

        Object newValue = new Object();
        assertSame(entry.getValue(), cache.asMap().put(entry.getKey(), newValue));
        // don't let the new entry get GCed
        warmed.add(entryOf(entry.getKey(), newValue));
        Object newKey = new Object();
        assertNull(cache.asMap().put(newKey, entry.getValue()));
        // this getUnchecked() call shouldn't be a cache miss; verified below

                    registration.setState(WitnessRegistrationState.REGISTERED);
                    registration.setContextHandle(response.getContextHandle());
                    registrations.put(registration.getRegistrationId(), registration);
                    listeners.put(registration.getRegistrationId(), listener);

                    // Start async notification monitoring for this registration

   *     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");
   * }
   * }
   *
   * <p>To collect to an {@link ImmutableMultimap}, use either {@link

   *     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");
   * }
   * }
   *
   * <p>To collect to an {@link ImmutableMultimap}, use either {@link

        }

        @Override
        public int getStatus() {
            return status;
        }

        @Override
        public void setHeader(String name, String value) {
            headers.put(name, value);
        }

        @Override
        public String getHeader(String name) {
            return headers.get(name);
        }

        @Override
        public PrintWriter getWriter() {

For these cases, your **FastAPI** application has an attribute `app.dependency_overrides`, it is a simple `dict`.

To override a dependency for testing, you put as a key the original dependency (a function), and as the value, your dependency override (another function).

And then **FastAPI** will call that override instead of the original dependency.

      for (int index2 = 0; index2 <= 100; index2++) {
        ImmutableMap.Builder<Integer, Double> expectedBuilder = ImmutableMap.builder();
        expectedBuilder.put(index1, expectedLargeDatasetPercentile(index1));
        if (index2 != index1) {
          expectedBuilder.put(index2, expectedLargeDatasetPercentile(index2));
        }
        assertThat(percentiles().indexes(index1, index2).compute(PSEUDORANDOM_DATASET))

      for (int index2 = 0; index2 <= 100; index2++) {
        ImmutableMap.Builder<Integer, Double> expectedBuilder = ImmutableMap.builder();
        expectedBuilder.put(index1, expectedLargeDatasetPercentile(index1));
        if (index2 != index1) {
          expectedBuilder.put(index2, expectedLargeDatasetPercentile(index2));
        }
        assertThat(percentiles().indexes(index1, index2).compute(PSEUDORANDOM_DATASET))