private void HandleDefiningQueryElement(XmlReader reader)
        {
            DebugCheck.NotNull(reader);

            var query = new EntityContainerEntitySetDefiningQuery(this);
            query.Parse(reader);
            _definingQueryElement = query;
        }
        private void HandleDefiningQueryElement(XmlReader reader)
        {
            Debug.Assert(reader != null);

            var query = new EntityContainerEntitySetDefiningQuery(this);
            query.Parse(reader);
            _definingQueryElement = query;
        }