area
class area(val x: Number? = null, val y: Number? = null, val alpha: Number? = null, val color: Any? = null, val fill: Any? = null, val linetype: Any? = null, val size: Number? = null, val colorBy: String? = null, val fillBy: String? = null, val mapping: AreaMapping.() -> Unit = {}) : GeomOptions, AreaAesthetics, WithColorOption, WithFillOption