Spring retVal = height; if ((retVal == null) && (y != null) && (south != null)) { retVal = Spring.sum(south, Spring.minus(y)); } return retVal;
if (height != null) return height; else if ((v == null) && (y != null) && (south != null)) v = Spring.sum(south, Spring.minus(y)); return v;
    public Spring getHeight()    {      Spring retVal = height;      if ((retVal == null) && (y != null) && (south != null))        {          retVal = Spring.sum(south, Spring.minus(y));        }      return retVal;    }