System.Runtime.Serialization.ObjectToIdCache.ReassignId C# (CSharp) Method

        public int ReassignId(int oldObjId, object oldObj, object newObj)
        {
            bool isEmpty, isWrapped;
            int position = FindElement(oldObj, out isEmpty, out isWrapped);
            if (isEmpty)
                return 0;
            int id = m_ids[position];
            if (oldObjId > 0)
                m_ids[position] = oldObjId;
            else
                RemoveAt(position);
            position = FindElement(newObj, out isEmpty, out isWrapped);
            int newObjId = 0;
            if (!isEmpty)
                newObjId = m_ids[position];
            m_objs[position] = newObj;
            m_ids[position] = id;
            m_isWrapped[position] = isWrapped;
            return newObjId;
        }