LeanbackShowcase/app/src/main/java/androidx/leanback/leanbackshowcase/app/details/DetailViewExampleFragment.java [137:161]:
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        actionAdapter.add(mActionWishList);
        actionAdapter.add(mActionRelated);
        detailsOverview.setActionsAdapter(actionAdapter);
        mRowsAdapter.add(detailsOverview);

        // Setup related row.
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(
                new CardPresenterSelector(getActivity()));
        for (Card characterCard : data.getCharacters()) listRowAdapter.add(characterCard);
        HeaderItem header = new HeaderItem(0, getString(R.string.header_related));
        mRowsAdapter.add(new CardListRow(header, listRowAdapter, null));

        // Setup recommended row.
        listRowAdapter = new ArrayObjectAdapter(new CardPresenterSelector(getActivity()));
        for (Card card : data.getRecommended()) listRowAdapter.add(card);
        header = new HeaderItem(1, getString(R.string.header_recommended));
        mRowsAdapter.add(new ListRow(header, listRowAdapter));

        setAdapter(mRowsAdapter);
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                startEntranceTransition();
            }
        }, 500);
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LeanbackShowcase/app/src/main/java/androidx/leanback/leanbackshowcase/app/details/DetailViewExampleWithVideoBackgroundFragment.java [150:174]:
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        actionAdapter.add(mActionWishList);
        actionAdapter.add(mActionRelated);
        detailsOverview.setActionsAdapter(actionAdapter);
        mRowsAdapter.add(detailsOverview);

        // Setup related row.
        ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(
                new CardPresenterSelector(getActivity()));
        for (Card characterCard : data.getCharacters()) listRowAdapter.add(characterCard);
        HeaderItem header = new HeaderItem(0, getString(R.string.header_related));
        mRowsAdapter.add(new CardListRow(header, listRowAdapter, null));

        // Setup recommended row.
        listRowAdapter = new ArrayObjectAdapter(new CardPresenterSelector(getActivity()));
        for (Card card : data.getRecommended()) listRowAdapter.add(card);
        header = new HeaderItem(1, getString(R.string.header_recommended));
        mRowsAdapter.add(new ListRow(header, listRowAdapter));

        setAdapter(mRowsAdapter);
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                startEntranceTransition();
            }
        }, 500);
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