/// <summary> /// Creates a select operator query expression that is like this one, but using the supplied children. If all of the children are the same, it will return this expression. /// </summary> /// <param name="source">The <see cref="Source"/> child node of the result.</param> /// <param name="selector">The <see cref="Selector"/> child node of the result.</param> /// <returns>This query expression if no children are changed or an expression with the updated children.</returns> public SelectOperator Update(MonadMember source, QueryTree selector) { if (source == Source && selector == Selector) { return(this); } return(QueryExpressionFactory.Select(ElementType, InputElementType, source, selector)); }