List<AvPair> pairs = new LinkedList<>();
        AvFlags oldFlags1 = new AvFlags(0x11111111);
        AvFlags oldFlags2 = new AvFlags(0x22222222);
        AvTimestamp timestamp = new AvTimestamp(new byte[8]);
        pairs.add(oldFlags1);
        pairs.add(timestamp);
        pairs.add(oldFlags2);

        AvFlags newFlags = new AvFlags(0x33333333);
        AvPairs.replace(pairs, newFlags);

import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.NameServiceClient;
import jcifs.NetbiosAddress;
import jcifs.ntlmssp.av.AvFlags;
import jcifs.ntlmssp.av.AvPair;
import jcifs.ntlmssp.av.AvPairs;
import jcifs.ntlmssp.av.AvSingleHost;
import jcifs.ntlmssp.av.AvTargetName;
import jcifs.ntlmssp.av.AvTimestamp;

/**

            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));
        }

        AvPairs.replace(serverAvPairs, new AvTimestamp(ts));