src/vs/workbench/contrib/tasks/common/problemCollectors.ts/AbstractProblemCollector/captureMatch
class AbstractProblemCollector:	private captureMatch(match: IProblemMatch): void {
		this._numberOfMatches++;
		if (this._maxMarkerSeverity === undefined || match.marker.severity > this._maxMarkerSeverity) {
			this._maxMarkerSeverity = match.marker.severity;
		}
	}