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``` public class SpectatorItemView extends ConstraintLayout { private ImageView ivAvatar; private Vi

``` public class SpectatorView extends ConstraintLayout { private ImageView ivArrowLeft; private Rec

``` public class VideoUserWindow extends RelativeLayout { private PaasPlusRederView ppv; private Ima

``` public class MultiMeetingView extends FrameLayout implements IUserUpdateCallback, SpectatorView.

``` public class SingleAudioView extends LinearLayout { private Context context; private ImageView i

``` public class MultiAudioLayout extends ViewGroup implements IUserUpdateCallback { private Context

``` public class SmallUserWindow extends RelativeLayout { private ImageView ivSwitchCamera; private

``` public class SingleVideoView extends ConstraintLayout { private PaasPlusRederView bigUserWindow;

``` public class MultiVideoLayout extends ViewGroup { private Context context; private int childVert