changeSubscriptionCall.invoke(cbk, 3000);
TestUtil.checkReply(cbk.getMessageSync(1000));
// receive publication first message
receivePublicationCall = new SCMPReceivePublicationCall(this.requester, TestConstants.pubServerName1, sessionId);
receivePublicationCall.invoke(cbk, 10000);
reply = cbk.getMessageSync(10000);
Assert.assertFalse(reply.getHeaderFlag(SCMPHeaderAttributeKey.NO_DATA));
SCMPClnUnsubscribeCall unSubscribeCall = new SCMPClnUnsubscribeCall(this.requester, TestConstants.pubServerName1, sessionId);
unSubscribeCall.invoke(cbk, 3000);