throw new IOException("Failed to access " + url, e);
            }
        }

        /**
         * Gets the Blob object from GCS.
         * This method caches the response to avoid repeated calls.
         *
         * @return The Blob object
         * @throws IOException If an I/O error occurs
         */
        private Blob getBlob() throws IOException {
            if (blob == null) {

            }
        }

        /**
         * Gets the object head response from the S3 service.
         * This method caches the response to avoid repeated calls.
         *
         * @return The object head response
         * @throws IOException If an error occurs
         */
        private HeadObjectResponse getHeadObject() throws IOException {

        lenient().when(fileEntry.getName()).thenReturn("test");
    }

    @Test
    @DisplayName("Iterator without filter - simple case")
    void iteratorWithoutFilter() {
        // Setup: constructor calls advance() once
        when(delegate.hasNext()).thenReturn(true, false);
        when(delegate.next()).thenReturn(fileEntry);

        TestIterator iterator = new TestIterator(null);

        // Verify iteration

        byte[] clonedResult = clonedHmac.engineDigest();

        assertArrayEquals(originalResult, clonedResult);
    }

    @Test
    void testMultipleUpdates() {
        // Test multiple update calls
        HMACT64 hmac1 = new HMACT64(TEST_KEY);
        HMACT64 hmac2 = new HMACT64(TEST_KEY);

        // Update hmac1 all at once
        hmac1.engineUpdate(TEST_DATA, 0, TEST_DATA.length);

    for (int i = 0; i < cellList.size(); i++) {
      Cell<R, C, V> cell = cellList.get(i);
      R rowKey = cell.getRowKey();
      C columnKey = cell.getColumnKey();
      // The requireNonNull calls are safe because we construct the indexes with indexMap.
      int rowIndex = requireNonNull(rowKeyToIndex.get(rowKey));
      int columnIndex = requireNonNull(columnKeyToIndex.get(columnKey));

   *       userspace buffer (byte[] or ByteBuffer), then copies them from that buffer into the
   *       destination channel.
   * </ol>
   *
   * This value is intended to be large enough to make the overhead of system calls negligible,
   * without being so large that it causes problems for systems with atypical memory management if
   * approaches 2 or 3 are used.
   */
  private static final int ZERO_COPY_CHUNK_SIZE = 512 * 1024;

 * that every {@code Runnable} that is {@linkplain #add added} will be executed after {@link
 * #execute()} is called. Any {@code Runnable} added after the call to {@code execute} is still
 * guaranteed to execute. There is no guarantee, however, that listeners will be executed in the
 * order that they are added.
 *

   *         .putEdge(FRANCE, BELGIUM)
   *         .putEdge(GERMANY, BELGIUM)
   *         .addNode(ICELAND)
   *         .build();
   * }
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple graphs in series. Each new graph contains all the elements of the ones created before
   * it.
   *
   * @since 28.0
   */
  public static class Builder<N> {

     * @throws ExecutionError if the loading thread throws an error
     */
    V waitForValue() throws ExecutionException;

    /** Returns the weight of this entry. This is assumed to be static between calls to setValue. */
    int getWeight();

    /**
     * Returns the entry associated with this value reference, or {@code null} if this value
     * reference is independent of any entry.
     */

            // Then
            assertNotNull(newResponse);
            // Verify the response was created successfully with the configuration
            // The constructor doesn't actually call any methods on the config during construction
        }
    }

    @Nested
    @DisplayName("Edge case tests")
    class EdgeCaseTests {

        @Test