Expression language, support fluent style method calling for better readability

[Rich-biomni]

The expression language is an extremely valuable part of building a bot, It would be a great enhancement in terms of expression readability if the expression syntax could support a fluent/extension method style.

Examples:

//decalred variable..
var1 = [{age:21}, {age:22}, {age:23}]

Current syntax

where(select(var1, x => x.age), x => x > 21))

--

fluent/extension syntax

var1.select(x => x.age).where(x => x > 21)