https://developer.android.com/reference/android/support/v17/leanback/widget/AbstractMediaListHeaderPresenter.ViewHolder?authuser=5
AbstractMediaListHeaderPresenter.ViewHolder | API reference | Android Developers
api referenceandroiddevelopers
https://developer.android.com/reference/android/support/v17/leanback/widget/AbstractMediaListHeaderPresenter?authuser=4
AbstractMediaListHeaderPresenter | API reference | Android Developers
api referenceandroiddevelopers