Collection<V> result = multimap().asMap().get(k0());
    result.clear();
    assertGet(k0());
    assertEmpty(result);
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_VALUES})
  public void testAddNullValue() {
    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.add(null));

    }

    @Override
    protected <RESULT extends FileAuthentication> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));

    }

    @Override
    protected <RESULT extends PathMapping> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));

        final String result = Base64Util.encode(new byte[0]);
        assertEquals("Empty array should return empty string", "", result);
    }

    /**
     * Test encode with null returns empty string
     *
     * @throws Exception
     */
    public void testEncode_Null() throws Exception {
        final String result = Base64Util.encode(null);

  val unusedBitsCount: Int,
) {
  // Avoid Long.hashCode(long) which isn't available on Android 5.
  override fun hashCode(): Int {
    var result = 0
    result = 31 * result + byteString.hashCode()
    result = 31 * result + unusedBitsCount
    return result
  }

    }

    @Override
    protected <RESULT extends ElevateWord> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setBoost(DfTypeUtil.toFloat(source.get("boost")));
            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));

        @SuppressWarnings("unchecked")
        final List<String> result = (List<String>) SerializeUtil.fromBinaryToObject(binary);
        assertEquals(3, result.size());
        assertEquals("first", result.get(0));
        assertNull(result.get(1));
        assertEquals("third", result.get(2));
    }

    /**
     * Test helper class for serialization tests
     */

        final String[] result = chatApiManager.parseExtraQueries(request);
        assertEquals(3, result.length);
        assertEquals("filetype:HTML OR filetype:PDF", result[0]);
        assertEquals("timestamp:[now-1y TO *]", result[1]);
        assertEquals("content_length:[0 TO 10000]", result[2]);
    }

    @Test

        return (T) field;
    }

    /**
     * Iterates through all access results for a session, calling the callback for each result.
     * Uses OpenSearch scroll API for efficient iteration over large result sets.
     *
     * @param sessionId The session ID.
     * @param callback The callback to execute for each access result.
     */
    @Override

    }

    public void testLicenseAndNotice() throws IOException {
        BuildResult result = getGradleRunner().withArguments("clean", "assemble").build();
        assertTaskSuccessful(result, ":assemble");
        assertBuildFileExists(result, projectName(), "distributions/elasticsearch.build.jar");
        try (ZipFile zipFile = new ZipFile(new File(getBuildDir(projectName()), "distributions/elasticsearch.build.jar"))) {