src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts/AbstractTaskService/updateNeverProblemMatcherSetting
class AbstractTaskService:	private async updateNeverProblemMatcherSetting(type: string): Promise<void> {
		const current = this.configurationService.getValue(PROBLEM_MATCHER_NEVER_CONFIG);
		if (current === true) {
			return;
		}
		let newValue: IStringDictionary<boolean>;
		if (current !== false) {
			newValue = <any>current;
		} else {
			newValue = Object.create(null);
		}
		newValue[type] = true;
		return this.configurationService.updateValue(PROBLEM_MATCHER_NEVER_CONFIG, newValue);
	}