code: private void initializePoster() {
      Picasso.with(this)
          .load(VIDEO_POSTER)
          .placeholder(R.drawable.spiderman_placeholder)
          .into(posterImageView);
      Picasso.with(this)
          .load(VIDEO_THUMBNAIL)
          .placeholder(R.drawable.spiderman_placeholder)
          .into(thumbnailImageView);
    }
docs: Initialize some ImageViews with a video poster and a video thumbnail.