src/vs/workbench/contrib/tasks/common/problemMatcher.ts/ProblemPatternParser/createNamedMultiLineProblemPattern
class ProblemPatternParser:	private createNamedMultiLineProblemPattern(value: Config.NamedMultiLineCheckedProblemPattern): NamedMultiLineProblemPattern | null {
		const validPatterns = this.createMultiLineProblemPattern(value.patterns);
		if (!validPatterns) {
			return null;
		}
		let result = {
			name: value.name,
			label: value.label ? value.label : value.name,
			patterns: validPatterns
		};
		return result;
	}