code: public static Point2d convert(Tuple2D<?> tuple) {
  		if (tuple instanceof Point2d) {
  			return (Point2d) tuple;
  		}
  		return new Point2d(tuple.getX(), tuple.getY());
  	}
docs: Convert the given tuple to a real Point2d.
  
  <p>If the given tuple is already a Point2d, it is replied.
  
  @param tuple the tuple.
  @return the Point2d.
  @since 14.0