type Element =
  | E of IWebElement

let byId s (Element e) = e.GetElementById s
let byCss c (Element e) = e.SelectElements c

let interaction = Element -> unit
let click (Element e) = e.Click()

val bindPM<'a> : Element -> 'a

type Item {
   Title of string
}

type Blog = {
   Items of Item list
}
with static member from (Element e) = ..

type HomePage = {
   Blog : Blog
   ClickOnTheHeaderBar : interaction
}
with static member from (Element e) = {
   Blog = Blog.from e
   ClickOnTheMiddleWrapper = (fun () -> byId "middleWrapper" e |> click)
}