code: public RoundingParams setCornersRadii(float[] radii) {
      Preconditions.checkNotNull(radii);
      Preconditions.checkArgument(radii.length == 8, "radii should have exactly 8 values");
      System.arraycopy(radii, 0, getOrCreateRoundedCornersRadii(), 0, 8);
      return this;
    }
docs: Sets the rounded corners radii.
  
  @param radii float array of 8 radii in pixels. Each corner receives two radius values [X, Y].
  The corners are ordered top-left, top-right, bottom-right, bottom-left.
  @return modified instance