IdentityChangeDetector identityChangeDetector = new IdentityChangeDetector(oldIdentities.keySet());
identityChangeDetector.onNewIdentity(addNewOwnIdentityAndItsTrustedIdentities(identities));
identityChangeDetector.onRemovedIdentity(removeOwnIdentityAndItsTrustedIdentities(oldIdentities));
IdentityChangeDetector identityChangeDetector = new IdentityChangeDetector(oldIdentities.keySet());
identityChangeDetector.onNewIdentity(addNewOwnIdentityAndItsTrustedIdentities(identities));
identityChangeDetector.onRemovedIdentity(removeOwnIdentityAndItsTrustedIdentities(oldIdentities));