assertThrows(IllegalArgumentException.class, domainSid::getRid);
    }

    /**
     * Test getting the account name.
     */
    @Test
    void testGetAccountName() {
        rpc.sid_t rpcSid = new rpc.sid_t();
        SID sid = new SID(rpcSid, SID.SID_TYPE_USER, "DOMAIN", "user", false);
        assertEquals("user", sid.getAccountName());