}
Persistence<?> p = originalModel;
if(p==null)
p = newModel;
Identity classIdentity = identityManager.getClassIdentity( p );
if( classIdentity == null ){
classIdentity = new Identity( p );
this.identityManager.create(classIdentity);
}
access.setClassIdentity(classIdentity);
History history = new History(access,originalModel,newModel);