src/vs/workbench/contrib/markers/browser/markersTable.ts/MarkerOwnerColumnRenderer/renderElement
class MarkerOwnerColumnRenderer:	renderElement(element: MarkerTableItem, index: number, templateData: IMarkerHighlightedLabelColumnTemplateData, height: number | undefined): void {
		templateData.columnElement.title = element.marker.owner;
		templateData.highlightedLabel.set(element.marker.owner, element.ownerMatches);
	}