@Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            TaskDescriptor td = (TaskDescriptor) o;

            if (sequenceId != td.sequenceId) return false;
            if (timestamp != td.timestamp) return false;
            if (!task.equals(td.task)) return false;

            return true;
        }
Invoke registered MessageHandler with message
@param message message to "send"
documentapi/src/test/java/com/yahoo/documentapi/messagebus/MessageBusVisitorSessionTestCase.java