How to use the timeline-state-resolver-types.TimelineContentTypeLawo.SOURCE function in timeline-state-resolver-types

_.each(timelineObjs, (obj) => {
		if (obj.content.type === TimelineContentTypeLawo.SOURCE) {
			let lawoObj = obj as TimelineObjLawo & TimelineObjGeneric

			_.each(lawoObj.content.attributes, (val, key) => {
				// set triggerValue to the current playing segment, thus triggering commands to be sent when nexting:
				lawoObj.content.attributes[key].triggerValue = currentPartId || ''
			})
		}
	})
}