/** {@inheritDoc} */
@Override
public boolean register(UUID nodeId, UUID routineId, final GridKernalContext ctx)
throws GridException {
ctx.io().addUserMessageListener(topic, pred);
return true;
}
/** {@inheritDoc} */
@Override
public void unregister(UUID routineId, GridKernalContext ctx) {
ctx.io().removeUserMessageListener(topic, pred);
}