UI Scripting iTunes "Download All Free Updates"

tell application "System Events" to tell process "iTunes"
    set frontmost to true
    delay 1

    tell window "iTunes"
        tell splitter group 1
            tell UI element "loading iTunes store"

                UI elements

            end tell
        end tell
    end tell
end tell

(*
In the returned results, you will see:

    UI element "Download All Free Updates"

*)