/**
  * Set the size of the icon markers
  *
  * @param int $iconWidth GoogleMap  marker icon width
  * @param int $iconHeight GoogleMap  marker icon height
  *
  * @return void
  */
 public function set_icon_size($iconWidth, $iconHeight)
 {
     self::$iconWidth = $iconWidth;
     self::$iconHeight = $iconHeight;
 }