src/vs/workbench/contrib/timeline/browser/timelinePane.ts/TimelinePaneCommands/updateTimelineSourceFilters
class TimelinePaneCommands:	private updateTimelineSourceFilters() {
		this.sourceDisposables.clear();

		const excluded = new Set(this.configurationService.getValue<string[] | undefined>('timeline.excludeSources') ?? []);

		for (const source of this.timelineService.getSources()) {
			this.sourceDisposables.add(registerAction2(class extends Action2 {
				constructor() {
					super({
						id: `timeline.toggleExcludeSource:${source.id}`,
						title: { value: localize('timeline.filterSource', "Include: {0}", source.label), original: `Include: ${source.label}` },
						category: { value: localize('timeline', "Timeline"), original: 'Timeline' },
						menu: {
							id: MenuId.TimelineTitle,
							group: '2_sources',
						},
						toggled: ContextKeyExpr.regex(`config.timeline.excludeSources`, new RegExp(`\\b${escapeRegExpCharacters(source.id)}\\b`)).negate()
					});
				}
				run(accessor: ServicesAccessor, ...args: any[]) {
					if (excluded.has(source.id)) {
						excluded.delete(source.id);
					} else {
						excluded.add(source.id);
					}

					const configurationService = accessor.get(IConfigurationService);
					configurationService.updateValue('timeline.excludeSources', [...excluded.keys()]);
				}
			}));
		}
	}