} catch (final SQLException ex) {
            throw new SQLRuntimeException(ex);
        }
    }

    /**
     * Sets the fetch size.
     *
     * @param statement
     *            {@link Statement}. Must not be {@literal null}.
     * @param fetchSize
     *            Fetch size.
     * @see Statement#setFetchSize(int)
     */
    public static void setFetchSize(final Statement statement, final int fetchSize) {

 *   <li><b>Total nodes:</b> 65535 (16-bit index in the trie)
 *   <li><b>String pool size:</b> 65535 characters (16-bit offset in the String Pool)
 *   <li><b>Max children per node:</b> 2047 (11-bit count in the bitfield)
 * </ul>
 *
 * <p>As of Jan 2026, the capacity usage is approximately:
 *
 * <ul>
 *   <li>Total nodes: ~16% (10k / 65k)
 *   <li>String pool size: ~79% (52k / 65k)
 *   <li>Max children per node: ~71% (1.5k / 2k)
 * </ul>
 *

   * encoding of each part occupies at least two bytes (dot plus label externally, length byte plus
   * label internally). Thus, if all labels have the minimum size of one byte, 127 of them will fit.
   */
  private static final int MAX_PARTS = 127;

  /**
   * Maximum length of a full domain name, including separators, and leaving room for the root

                        System.currentTimeMillis() - phaseStartTime);
                if (logger.isDebugEnabled()) {
                    logger.debug("[RAG] Phase {} completed. query={}, resultCount={}, phaseElapsedTime={}ms",
                            ChatPhaseCallback.PHASE_SEARCH, query, searchResults.size(), System.currentTimeMillis() - phaseStartTime);
                }

        urlList = fessXpathTransformer.convertChildUrlList(urlList);
        assertEquals(0, urlList.size());

        urlList.clear();
        urlList.add(RequestDataBuilder.newRequestData().get().url("http://www.example.com").build());
        urlList = fessXpathTransformer.convertChildUrlList(urlList);
        assertEquals(1, urlList.size());
        assertEquals("http://www.example.com", urlList.get(0).getUrl());

  }

  /**
   * Returns the number of elements in this fluent iterable.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#count}.
   */
  public final int size() {
    return Iterables.size(getDelegate());
  }

  /**
   * Returns {@code true} if this fluent iterable contains any object for which {@code
   * equals(target)} is true.
   *

  }

  /**
   * Returns the number of elements in this fluent iterable.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#count}.
   */
  public final int size() {
    return Iterables.size(getDelegate());
  }

  /**
   * Returns {@code true} if this fluent iterable contains any object for which {@code
   * equals(target)} is true.
   *

  // If the set has this many elements, it will "max out" the table size
  private static final int CUTOFF = (int) (MAX_TABLE_SIZE * DESIRED_LOAD_FACTOR);

  /**
   * Returns an array size suitable for the backing array of a hash table that uses open addressing
   * with linear probing in its implementation. The returned size is the smallest power of two that

                return fieldSet;
            }
        };
        ComponentUtil.register(mockConfig, "fessConfig");

        assertEquals(2, mockConfig.getApiPingEsFieldSet().size());
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("cluster_name"));
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("status"));
    }

    @Test
    public void test_emptyFieldSet() {

      this.mutex = mutex;
    }

    @Override
    protected Map<K, V> delegate() {
      return delegate;
    }

    @Override
    public int size() {
      assertTrue(Thread.holdsLock(mutex));
      return super.size();
    }

    @Override
    public boolean isEmpty() {
      assertTrue(Thread.holdsLock(mutex));
      return super.isEmpty();
    }

    @Override