Adding of JMS/MDB annotations in classes of project switches off activation-call of install singleton service in cluster.

singleton service in cluster:
https://github.com/wildfly/quickstart/tree/master/cluster-ha-singleton

MDB classes from example:
https://blogs.oracle.com/arungupta/entry/simple_jms_2_0_sample

JMS Annotations example:
http://www.mastertheboss.com/jboss-server/jboss-jms/jms-20-tutorial-on-wildfly-as

(by the way. what is right method of invoking methods of singletone in cluster? method getValue in example - doesn't contain any arguments)