ForceElement
case class ForceElement(force: ForceEnum, x: Option[XUnion], y: Option[XUnion], iterations: Option[HeightElement], radius: Option[Radius], strength: Option[StrengthUnion], distanceMax: Option[HeightElement], distanceMin: Option[HeightElement], theta: Option[HeightElement], distance: Option[Radius], id: Option[ColorElement], links: Option[String])