*
     * @param src the source byte array to convert
     * @param srcIndex the starting index in the source array
     * @param size the number of bytes to convert from the source array
     * @return a hexadecimal string representation of the byte array
     */
    public static String toHexString(final byte[] src, final int srcIndex, final int size) {

        IOException error = new IOException("Connection failed");
        failover.handleFailure(failedChannel, error);

        // Verify pending operations were cleared from failed channel
        assertEquals(0, failedChannel.getRequestsPending());

        // Verify alternative channel was selected and operation added
        verify(mockLoadBalancer).selectChannel(mockOperation);

        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

    @Test
    void testClose_SmbExceptionOnClose() throws IOException {
        // Test case: close() with non-zero retval from MsrpcSamrCloseHandle, should throw SmbException
        String server = "testServer";
        int access = 123;
        int errorRetval = 12345; // Simulate an error code

        // Setup for successful constructor

                        () -> asListHtml(this::saveToken));
            }
        }
        return redirect(getClass()); // no-op
    }

    /**
     * Creates a CURL request from the provided header string.
     *
     * @param header the header string containing HTTP method and path
     * @return CURL request object or null if header is invalid
     */

            docList.stream().forEach(doc -> {
                if (!thumbnailManager.offer(doc)) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Removing {}={} from doc[{}]", thumbnailField, doc.get(thumbnailField),
                                doc.get(fessConfig.getIndexFieldUrl()));
                    }
                    doc.remove(thumbnailField);
                }

            if (p.getType() == type) {
                return true;
            }
        }
        return false;
    }

    /**
     * Gets the first AV pair of the specified type from the list
     *
     * @param pairs the list of AV pairs to search
     * @param type the AV pair type to retrieve
     * @return first occurance of the given type
     */

        // Assert: the extended interface relationship holds
        assertTrue(impl instanceof CredentialsInternal, "Should be usable as CredentialsInternal");

        // Cast and check we can call clone() from CredentialsInternal contract
        CredentialsInternal ci = (CredentialsInternal) impl;
        CredentialsInternal cloned = ci.clone();
        assertNotNull(cloned, "clone() should return a non-null CredentialsInternal");

        verify(locator).handleDFSReferral(null, "");
        verifyNoMoreInteractions(locator);
    }

    // Invalid input: null reqPath leads to NPE from implementation
    @Test
    @DisplayName("handleDFSReferral throws NPE on null reqPath")
    void handleDfsReferralNullPathThrows() {

        assertTrue(UniAddress.isAllDigits(""), "isAllDigits should return true for empty string (no non-digits)");
    }

    /* ---------------------------------------------------------------------
     * 4. Exceptions from static methods that don't resolve without stubbing
     * --------------------------------------------------------------------- */
    @Test
    void getAllByNameRejectsNullOrEmptyHostname() {

            if (resourceAsStream != null) {
                properties.load(resourceAsStream);
            }
        } catch (IOException e) {
            System.err.println("Unable determine version from JAR file: " + e.getMessage());
        }

        return properties;
    }

    public static void showError(Logger logger, String message, Throwable e, boolean showStackTrace) {
        if (logger == null) {