/**
* Fetches unique identifier for composition.
*
* @param componentBits composition to fetch unique identifier for.
* @return Unique identifier for passed composition.
*/
int compositionIdentity(BitSet componentBits) {
int identity = identityResolver.getIdentity(componentBits);
if (identity > highestSeenIdentity) {
subscriptionManager.processComponentIdentity(identity, componentBits);
highestSeenIdentity = identity;
}
return identity;
}
