// Test unavailable SID type (type 7 - INVALID)
        assertNull(sambaHelper.getAccountId(createMockSID(7, "Invalid Account")));
    }

    @Test
    public void test_getAccountId_smb1_basic() throws SmbException {
        // Note: SMB1 SID testing is limited due to interface constraints
        // This test verifies the method exists and handles the SMB1 SID parameter type