@Override
        public boolean equals(Object other) {
            if (other == null) {
                return false;
            }
            if (other.getClass() != getClass()) {
                return false;
            }
            return ((UnknownThrottlePolicySignature) other).policy == policy;
        }
Class to encapsulate access to slobrok sessions.

@author Steinar Knutsen
@author Einar Rosenvinge
container-messagebus/src/main/java/com/yahoo/container/jdisc/messagebus/SessionCache.java