docs: public void setZoomInFirst(boolean zoomInFirst) {
          this.removeAllViews();
          LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
          if (zoomInFirst) {
              this.addView(buttonZoomIn, layoutParams);
              this.addView(buttonZoomOut, layoutParams);
          } else {
              this.addView(buttonZoomOut, layoutParams);
              this.addView(buttonZoomIn, layoutParams);
          }
      }