code: public static Vector2dfx convert(Tuple2D<?> tuple) {
  		if (tuple instanceof Vector2dfx) {
  			return (Vector2dfx) tuple;
  		}
  		return new Vector2dfx(tuple.getX(), tuple.getY());
  	}
docs: Convert the given tuple to a real Vector2dfx.
  
  <p>If the given tuple is already a Vector2dfx, it is replied.
  
  @param tuple the tuple.
  @return the Vector2dfx.
  @since 14.0