Android nested scrollview anchored to AppBArLayout -

so, have situation, need create this:

where white background view nested view, , image elements in appbar. now, managed create without nestedscrollview being on appbarlayout, how can achieve that, how can put nestedscrollview above appbarlayout without loosing functionality?

in oreder make work, need following:

<android.support.v4.widget.nestedscrollview         android:layout_width="match_parent"         android:layout_height="match_parent"         app:behavior_overlaptop="64dp"         app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

where overlaptop how overlap , layout_behavior thing need here. hope helps.