label
constructor(x: Number? = null, y: Number? = null, label: String? = null, alpha: Number? = null, color: Any? = null, fill: Any? = null, size: Number? = null, family: String? = null, fontface: String? = null, hjust: Any? = null, vjust: Any? = null, angle: Number? = null, lineheight: Number? = null, labelFormat: String? = null, naText: String? = null, nudgeX: Number? = null, nudgeY: Number? = null, labelPadding: Number? = null, labelR: Number? = null, labelSize: Number? = null, alphaStroke: Boolean? = null, sizeUnit: String? = null, colorBy: String? = null, fillBy: String? = null, checkOverlap: Boolean? = null, mapping: LabelMapping.() -> Unit = {})