How properly use Flickable?

[Gourmet]

I have following working structure:

Item {
    ListView {
         delegate: Rectangle {
                MouseArea {
                }
                <texts, images and controls> {
                }
         }
    }
}

I need emit signal when user starts flick. I used Flickable type

        Flickable {
            onFlickStarted: console.warn(contentY)
        }

In any structure places. But I did not get any output. How use this type? There no complete examples anywhere.

[VRonin]

Flickable is a base class, ListView inherits it so ListView is already a Flickable

[Gourmet]

@VRonin yes, you are right. I did not notice this first.