public override DbExpression Visit(DbPropertyExpression expression)
        {
            Check.NotNull(expression, "expression");

            DbExpression result      = expression;
            var          newInstance = VisitExpression(expression.Instance);

            if (!ReferenceEquals(expression.Instance, newInstance))
            {
                result = CqtBuilder.Property(newInstance, expression.Property.Name);
            }
            NotifyIfChanged(expression, result);
            return(result);
        }