public LockEntry getWriter(Object obj)
    {
        PersistenceBroker broker = getBroker();
        Identity oid = new Identity(obj, broker); 
        return getWriter(oid);
    }
public LockEntry getWriter ( Object obj ) { PersistenceBroker broker = getBroker ( ) ; Identity oid = new Identity ( obj , broker ) ; return getWriter ( oid ) ; }
returns the LockEntry for the Writer of object obj.
If now writer exists, null is returned.