Object logger = loggerField.get(null); // static field

        // Verify logger is not null
        assertNotNull(logger);

        // Verify logger is of the expected type
        assertTrue(logger instanceof org.apache.logging.log4j.Logger);
    }

    // Test concurrent execution of hook method
    @Test
    public void test_hook_concurrentExecution() throws Exception {

        // Verify the exception can be created (serialVersionUID is defined in the class)
        assertNotNull(exception);
        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_stackTrace() {
        // Test that stack trace is properly captured
        String message = "Stack trace test";

        TrustManagerFactory.getDefaultAlgorithm());
    trustManagerFactory.init((KeyStore) null);
    TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
    if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
      throw new IllegalStateException("Unexpected default trust managers:"
          + Arrays.toString(trustManagers));
    }
    return (X509TrustManager) trustManagers[0];
  }

   *
   * @throws NullPointerException if any key or value in {@code map} is null
   */
  public static <K, V> ImmutableMap<K, V> copyOf(Map<? extends K, ? extends V> map) {
    if ((map instanceof ImmutableMap) && !(map instanceof SortedMap)) {
      @SuppressWarnings("unchecked") // safe since map is not writable
      ImmutableMap<K, V> kvMap = (ImmutableMap<K, V>) map;
      if (!kvMap.isPartialView()) {
        return kvMap;

        checkEsInvalidQuery(name, value);
        assertObjectNotNull("ck", ck);
        if (queryBuilderList != null) {
            for (QueryBuilder builder : queryBuilderList) {
                if (builder instanceof RangeQueryBuilder) {
                    RangeQueryBuilder rangeQueryBuilder = (RangeQueryBuilder) builder;
                    if (rangeQueryBuilder.toString().replaceAll("\\s", "").startsWith("{\"range\":{\"" + name + "\"")) {

        checkEsInvalidQuery(name, value);
        assertObjectNotNull("ck", ck);
        if (queryBuilderList != null) {
            for (QueryBuilder builder : queryBuilderList) {
                if (builder instanceof RangeQueryBuilder) {
                    RangeQueryBuilder rangeQueryBuilder = (RangeQueryBuilder) builder;
                    if (rangeQueryBuilder.toString().replaceAll("\\s", "").startsWith("{\"range\":{\"" + name + "\"")) {

  }

  @Override
  public ImmutableSet<C> columnKeySet() {
    return columnMap().keySet();
  }

  /**
   * {@inheritDoc}
   *
   * <p>The value {@code Map<R, V>} instances in the returned map are {@link ImmutableMap} instances
   * as well.
   */
  @Override
  public abstract ImmutableMap<C, Map<R, V>> columnMap();

  /**
   * {@inheritDoc}
   *

                    return true;
                }

                @Override
                public boolean equals(Object obj) {
                    return obj instanceof AlwaysTrueFilter;
                }

                @Override
                public int hashCode() {
                    return AlwaysTrueFilter.class.hashCode();
                }

    //                                                                       =============
    protected void checkEsInvalidAggregation(String name, Object value) {
        if (value == null || (value instanceof String && ((String) value).isEmpty())) {
            String msg = "Cannot register null or empty aggregation: name=" + name + " value=" + value;
            throw new InvalidQueryRegisteredException(msg);
        }
    }

    }

    @Override
    public int hashCode() {
      return Objects.hash(duration, unit);
    }

    @Override
    public boolean equals(@Nullable Object o) {
      if (o instanceof DurationSpec) {
        DurationSpec that = (DurationSpec) o;
        return unit.toNanos(duration) == that.unit.toNanos(that.duration);
      }
      return false;
    }

    @Override