Spectrum
constructor(id: String, tags: List<String>, comment: String? = null, time: Instant? = null, location: Location? = null, instruments: List<InstrumentRecord>, timeUnit: TimeUnit, powerUnit: PowerUnit, frequencyHz: Double, tracePoints: List<Point>, overlays: List<Overlay>, overlayResults: List<OverlayResult>, viewport: Viewport, imageFilePath: String? = null, thumbnailFilePath: String? = null)