assertEquals(3, pairs.size(), "Should start with 3 pairs");

        AvPairs.remove(pairs, AvPair.MsvAvFlags);

        assertEquals(1, pairs.size(), "Should have 1 pair after removal");
        assertFalse(AvPairs.contains(pairs, AvPair.MsvAvFlags), "Should not contain MsvAvFlags");
        assertTrue(AvPairs.contains(pairs, AvPair.MsvAvTimestamp), "Should still contain MsvAvTimestamp");
    }

    /**

            // should provide MIC
            this.micRequired = true;
            this.mic = new byte[16];
            int curFlags = 0;
            final AvFlags cur = (AvFlags) AvPairs.get(serverAvPairs, AvPair.MsvAvFlags);
            if (cur != null) {
                curFlags = cur.getFlags();
            }
            curFlags |= 0x2; // MAC present
            AvPairs.replace(serverAvPairs, new AvFlags(curFlags));
        }