// In test environments, getSubject() may return null if JAAS is not configured
        // This is acceptable behavior - the test should focus on the cloning logic

        // Clone and verify basic fields copied
        JAASAuthenticator copy = (JAASAuthenticator) orig.clone();
        assertEquals(orig.getUsername(), copy.getUsername());
        assertEquals(orig.getUserDomain(), copy.getUserDomain());

        int dstIndex = 10;

        // Act
        int bytesWritten = trans.writeDataWireFormat(dst, dstIndex);

        // Assert
        assertEquals(TEST_LENGTH, bytesWritten);

        // Verify data is copied correctly
        byte[] copiedData = new byte[TEST_LENGTH];
        System.arraycopy(dst, dstIndex, copiedData, 0, TEST_LENGTH);
        assertArrayEquals(TEST_DATA, copiedData);
    }

    @Test

	color: #093;
	font-style: normal;
}

#result .more {
	display: none;
}

#result .info {
	font-size: 80%;
}

#result .url-copy {
	color: #007bff;
}

#result .url-copied {
	color: #2c974b;
}

#result .favorited {
	display: none;
}

#result .favorited i {
	color: #fab005;
}

#result .thumbnail {
	width: 100px;
	min-height: 30px;

        int result = response.readDataWireFormat(buffer, 10, testData.length);

        assertEquals(testData.length, result);
        // Verify data was copied to outputBuffer
        byte[] expectedData = new byte[testData.length];
        System.arraycopy(outputBuffer, 0, expectedData, 0, testData.length);
        assertArrayEquals(testData, expectedData);
    }

        assertEquals("maven-core", clonedProject.getArtifactId());
        Map<?, ?> clonedMap = clonedProject.getManagedVersionMap();
        assertNotNull(clonedMap, "ManagedVersionMap not copied");
        assertTrue(clonedMap.isEmpty(), "ManagedVersionMap is not empty");
    }

    @Test
    void testCloneWithDependencyManagement() throws Exception {

    // Make sure to get an unmodifiable iterator
    return new MinimalIterable<>(asList(elements).iterator());
  }

  /**
   * Returns an iterable whose iterator returns the given elements in order. The elements are copied
   * out of the source collection at the time this method is called.
   */
  @SuppressWarnings("unchecked") // Es come in, Es go out
  public static <E extends @Nullable Object> MinimalIterable<E> from(Collection<E> elements) {

    }

    @Test
    void copiesOutputIntoProvidedBufferAndBlocksGetOutputData() throws Exception {
        // When an output buffer is provided, bytes are copied and getOutputData(Class) should fail.
        byte[] header = buildHeader(NtStatus.NT_STATUS_SUCCESS);
        byte[] output = new byte[] { 1, 2, 3, 4, 5 };

        assertEquals(len, enc.size(), "size() must equal provided length");
        assertEquals(len, written, "encode() must return number of bytes written");

        // Assert: copied region equals the source slice.
        for (int i = 0; i < len; i++) {
            assertEquals(src[off + i], dst[dstIndex + i], "Byte mismatch at " + i);
        }

  /**
   * Returns a copy of the input string in which all {@linkplain #isUpperCase(char) uppercase ASCII
   * characters} have been converted to lowercase. All other characters are copied without
   * modification.
   */
  public static String toLowerCase(String string) {
    int length = string.length();
    for (int i = 0; i < length; i++) {
      if (isUpperCase(string.charAt(i))) {

	// Copy on write
	dst := metadata
	var copied bool
	delKey := func(key string) {
		key = strings.ToLower(key)
		if _, ok := metadata[key]; !ok {
			return
		}
		if !copied {
			dst = make(map[string]string, len(metadata))
			maps.Copy(dst, metadata)
			copied = true
		}
		delete(dst, key)
	}
	legalHold := GetObjectLegalHoldMeta(metadata)