leanback/src/main/java/androidx/leanback/widget/PresenterSwitcher.java
public void init(ViewGroup parent, PresenterSelector presenterSelector) {
        clear();
        mParent = parent;
        mPresenterSelector = presenterSelector;
    }
/**
     * Initializes the switcher with a parent view to insert view into and a
     * {@link PresenterSelector} for choosing a {@link Presenter} for a given object.
     * This will destroy any existing views.
     */
Initializes the switcher with a parent view to insert view into and a
PresenterSelector for choosing a  Presenter for a given object.
This will destroy any existing views.
Initializes the switcher with a parent view to insert view into and a PresenterSelector for choosing a Presenter for a given object . This will destroy any existing views .
public void init(ViewGroup parent, PresenterSelector presenterSelector) {
        clear();
        mParent = parent;
        mPresenterSelector = presenterSelector;
    }
public void init ( ViewGroup parent , PresenterSelector presenterSelector ) { clear ( ) ; mParent = parent ; mPresenterSelector = presenterSelector ; }
Initializes the switcher with a parent view to insert view into and a
 {@link PresenterSelector} for choosing a {@link Presenter} for a given object.
Initializes the switcher with a parent view to insert view into and a { @link PresenterSelector } for choosing a { @link Presenter } for a given object .