*       typically because the type forbids nullable type arguments: For example, {@code
 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless

        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .artifactCoordinates(requireNonNull(artifactCoordinates, "artifactCoordinates cannot be null"))
                .build();
    }

    @Nonnull
    static VersionResolverRequest build(
            @Nonnull Session session,

     */
    @Test
    void testNoNullRefConstant() {
        assertNotNull(NdrException.NO_NULL_REF, "NO_NULL_REF constant should not be null.");
        assertEquals("ref pointer cannot be null", NdrException.NO_NULL_REF, "NO_NULL_REF constant should have the expected value.");
    }

    /**
     * Test the INVALID_CONFORMANCE static field.

     * @return The supported language, or null if not supported.
     */
    protected String getSupportedLanguage(final String lang) {
        if (StringUtil.isBlank(lang)) {
            return null;
        }
        for (final String l : supportedLanguages) {
            if (l.equals(lang)) {
                return l;
            }
        }
        return null;
    }

    /**

$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
trap {
  if ($TMP_DOWNLOAD_DIR.Exists) {
    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
  }
}

New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null

# Download and Install Apache Maven

    initMapWithNullValue();

    getMap().forcePut(k1(), null);

    expectContents(mapEntry(k1(), (V) null));

    assertFalse(getMap().containsKey(k0()));

    assertTrue(getMap().containsKey(k1()));
    assertTrue(getMap().inverse().containsKey(null));
    assertNull(getMap().get(k1()));
    assertEquals(k1(), getMap().inverse().get(null));
    assertEquals(1, getMap().size());
  }

    int initialSize = collection.size();
    assertTrue("remove(null) should return true", collection.remove(null));
    assertEquals(
        "remove(present) should decrease a collection's size by one.",
        initialSize - 1,
        collection.size());
    expectMissing((E) null);
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)

    if (previous != null) hostnameCount = previous;
    if (hostnameCount.getAndIncrement() >= hostLimit) return;

    Request request = new Request.Builder()
        .url(url)
        .build();
    try (Response response = client.newCall(request).execute()) {
      String responseSource = response.networkResponse() != null ? ("(network: "
          + response.networkResponse().code()

    /**
     * Returns an input stream for reading the contents of the specified Zip file entry.
     *
     * @param file
     *            Zip file. Must not be {@literal null}.
     * @param entry
     *            Zip file entry. Must not be {@literal null}.
     * @return An input stream for reading the contents of the specified Zip file entry.
     */
    public static InputStream getInputStream(final ZipFile file, final ZipEntry entry) {

        while (!queue.isEmpty()) {
            final SearchLog searchLog = queue.poll();
            if (searchLog != null) {
                final String userAgent = searchLog.getUserAgent();
                final boolean isBot =
                        userAgent != null && stream(botNames).get(stream -> stream.anyMatch(botName -> userAgent.indexOf(botName) >= 0));
                if (!isBot) {