class BorderCorner {

  abstract protected RectF getOvalIfInnerCornerExist()@NonNull
  abstract protected RectF getOvalIfInnerCornerExist();

  abstract protected RectF getOvalIfInnerCornerExist()  BorderCorner(float cornerRadius, float preBorderWidth, float postBorderWidth,
      @NonNull RectF borderBox, float angleBisector);

}