protected function createCircleShape()
{
$circleDiameter = $this->width - $this->borderSize;
$x = $this->width / 2;
$y = $this->height / 2;
$this->image->circle($circleDiameter, $x, $y, function (AbstractShape $draw) {
$draw->background($this->background);
$draw->border($this->borderSize, $this->getBorderColor());
});
}