final String[] values = name.split("/");
        if (values.length == 0) {
            return StringUtil.EMPTY;
        }
        return values[values.length - 1];
    }

    /**
     * Encodes an object name to a URL-safe base64 string.
     *
     * @param objectName the object name to encode
     * @return base64 encoded string
     */
    private String encodeId(final String objectName) {

    }

    /**
     * Edge: name-based filter behavior for diverse inputs.
     */
    @ParameterizedTest
    @DisplayName("name-based filter matches .txt case-insensitively")
    @CsvSource({ "notes.txt,true", "REPORT.TXT,true", "image.png,false", "archive.tar.gz,false", "txt,false" })
    void nameBasedFilterTxt(String name, boolean expected) throws Exception {

                messages.addErrorsCrudInvalidMode(GLOBAL, String.valueOf(expectedMode), String.valueOf(crudMode));
            }, errorHook);
        }
    }

    /**
     * Encodes permission strings into an array.
     *
     * @param permissionsText the permissions text (newline-separated)
     * @return encoded permission array
     */

        SmbException ex = new SmbException(123, true);
        assertEquals("123", ex.getMessage());
        assertEquals(123, ex.getNtStatus());
    }

    /**
     * Parameterised test covering many error codes.
     * - Error code 0 returns 0 (NT_STATUS_SUCCESS)
     * - Negative values with 0xC0000000 bits set are returned as-is
     * - Positive values not in DOS_ERROR_CODES map to NT_STATUS_UNSUCCESSFUL
     */

    /**
     * Returns the type of this SID indicating the state or type of account.
     * <p>
     * SID types are described in the following table.
     * <table>
     * <caption>Type codes</caption>
     * <tr>
     * <th>Type</th>
     * <th>Name</th>
     * </tr>
     * <tr>
     * <td>SID_TYPE_USE_NONE</td>
     * <td>0</td>
     * </tr>
     * <tr>
     * <td>SID_TYPE_USER</td>

        SamrPolicyHandle handle = new SamrPolicyHandle(mockHandle, server, access);

        SmbException thrown = assertThrows(SmbException.class, handle::close);

        // SmbException constructor maps non-NT status codes to NT_STATUS_UNSUCCESSFUL
        assertEquals(0xC0000001, thrown.getNtStatus()); // NT_STATUS_UNSUCCESSFUL
        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

        int[] codes = (int[]) propMap.get(CRAWLER_FAILURE_URL_STATUS_CODES);
        if (codes == null) {
            codes = split(getCrawlerFailureUrlStatusCodes(), ",")
                    .get(stream -> stream.filter(StringUtil::isNotBlank).mapToInt(Integer::parseInt).toArray());
            propMap.put(CRAWLER_FAILURE_URL_STATUS_CODES, codes);
        }
        for (final int v : codes) {

        @Test
        @DisplayName("Should handle rapid successive encodes")
        void testRapidSuccessiveEncodes() {
            String path = "\\\\server\\share\\folder\\file.dat";
            buffer = new DfsReferralRequestBuffer(path, 3);

            byte[] dst = new byte[buffer.size()];

            // Perform many rapid encodes
            for (int i = 0; i < 10000; i++) {

        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        })
                .build(newConfigs().clusterName("PopularWordsRequestBuilderTest")
                        .numOfNode(1)
                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));

import javax.crypto.spec.SecretKeySpec;
import javax.security.auth.kerberos.KerberosKey;

/**
 * Utility class for calculating and verifying PAC (Privilege Attribute Certificate) message authentication codes.
 * This class provides methods for computing MACs using various Kerberos encryption types including
 * ARCFOUR-HMAC-MD5 and AES-based HMAC algorithms.
 */
public class PacMac {

    /**