onDisplay

Activates Activity on the display specified in context and introduces a scope for actions and assertions. Lambda action is supplied with ActiveDisplayScope as a receiver. In this lambda it is important to always use ActiveDisplayScope.rootMatcher when obtaining a ViewInteraction.

May not be called recursively.

Prevents contraptions like:

onDisplay(xxx) {
    onDisplay(yyy) {
    }
}

This is not supported.