def METHOD_NAME(self, timeout=None):
    """
    Mock IPCMessageSubcriber read method.
    - Return events for initial ping
    - Returns event for a minion in first batch to cause second batch to get sent.
    - Returns 5 null events on first iteration of second batch to go back to first batch.
    - On second iteration of first batch, send an event from second batch which will get cached.
    - Return events for the rest of the batches.
    """
    if MockSubscriber.pubret.initial_ping:
        # Send ping responses for 4 minions
        jid = MockSubscriber.pubret.initial_ping
        if MockSubscriber.calls == 0:
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id="minion0", fun="test.ping")
        elif MockSubscriber.calls == 1:
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id="minion1", fun="test.ping")
        elif MockSubscriber.calls == 2:
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id="minion2", fun="test.ping")
        elif MockSubscriber.calls == 3:
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id="minion3", fun="test.ping")
    if MockSubscriber.pubret.batch1_jid:
        jid = MockSubscriber.pubret.batch1_jid
        tgt = MockSubscriber.pubret.batch1_tgt
        if MockSubscriber.calls == 4:
            # Send a return for first minion in first batch. This causes the
            # second batch to get sent.
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id=tgt[0], fun="state.sls")
    if MockSubscriber.pubret.batch2_jid:
        if MockSubscriber.calls <= 10:
            # Skip the first iteration of the second batch; this will cause
            # batch logic to go back to iterating over the first batch.
            MockSubscriber.calls += 1
            return
        elif MockSubscriber.calls == 11:
            # Send the minion from the second batch, This event will get cached.
            jid = MockSubscriber.pubret.batch2_jid
            tgt = MockSubscriber.pubret.batch2_tgt
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id=tgt[0], fun="state.sls")
    if MockSubscriber.calls == 12:
        jid = MockSubscriber.pubret.batch1_jid
        tgt = MockSubscriber.pubret.batch1_tgt
        MockSubscriber.calls += 1
        return self._ret(jid, minion_id=tgt[1], fun="state.sls")
    if MockSubscriber.pubret.batch3_jid:
        jid = MockSubscriber.pubret.batch3_jid
        tgt = MockSubscriber.pubret.batch3_tgt
        if MockSubscriber.calls == 13:
            MockSubscriber.calls += 1
            return self._ret(jid, minion_id=tgt[0], fun="state.sls")
    return