}

    // Edge: unknown service returns null per stub
    @Test
    @DisplayName("getSmbTree unknown service returns null as stubbed")
    void getSmbTree_unknownService() {
        when(session.getSmbTree(eq("share"), eq("UNKNOWN"))).thenReturn(null);
        assertNull(session.getSmbTree("share", "UNKNOWN"));
        verify(session).getSmbTree("share", "UNKNOWN");
    }

     */
    public String getId() {
        return (getGroupId() == null ? "[unknown-group-id]" : getGroupId())
            + ":" + (getArtifactId() == null ? "[unknown-artifact-id]" : getArtifactId())
            + ":" + (getVersion() == null ? "[unknown-version]" : getVersion());
    }
            ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>

     */
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */
    int getLineNumber();

    /**

        assertTrue(exception.getMessage().contains("Unknown quota info class"));
    }

    @Test
    @DisplayName("Test readBytesWireFormat with unknown info type throws exception")
    void testReadBytesWireFormatUnknownInfoType() {
        response = new Smb2QueryInfoResponse(mockConfig, (byte) 99, // Unknown info type
                (byte) 0);

        when(session.getRequest()).thenReturn(executionRequest);
        Session sessionv4 = mock(Session.class);
        when(session.getSession()).thenReturn(sessionv4);
        when(sessionv4.getToolchains()).thenReturn(toolchainModels);

        List<Toolchain> toolchains = toolchainManager.getToolchains(session, "unknown", null);

    }

    @Test
    public void test_setDefaultValue() {
        fileTypeHelper.setDefaultValue("unknown");
        assertEquals("unknown", fileTypeHelper.getDefaultValue());

        // Test that get() returns new default value
        assertEquals("unknown", fileTypeHelper.get("non/existent"));
    }

    @Test
    public void test_setDefaultValue_withNull() {

        //this if is a bit cheesy but 1-letter classname surely means a generic type and the warning will be useless
        if (className.length() > 1) {
            listener.warning(String.format("Could not generate link for unknown class '%s'", className));
        }
        Element element = document.createElement("classname");
        element.appendChild(document.createTextNode(className));
        return element;
    }

        }
    }

    @Test
    public void testCreateProviderUnknown() {
        RdmaProvider provider = RdmaProviderFactory.createProvider("unknown");
        assertNull(provider, "Unknown provider should return null");
    }

    @Test
    public void testSelectBestProvider() {
        RdmaProvider provider = RdmaProviderFactory.selectBestProvider();

    @Mock
    private Map<Integer, KerberosKey> mockKeys;

    /**
     * Test parsing with an unknown auth type.
     * Expects an empty list of authorizations.
     * @throws PACDecodingException should not be thrown
     */
    @Test
    void testParseUnknownAuthType() throws PACDecodingException {
        // GIVEN an unknown auth type
        int unknownAuthType = -1;
        byte[] emptyToken = new byte[0];

            case UNSPECIFIED:
                result.append("Unspecified error");
                break;
            default:
                result.append("Unknown error code: ").append(errorCode);
            }
            break;
        default:
            result.append("unknown error class: ").append(errorClass);
        }
        return result.toString();
    }

    /**