src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts/AbstractTaskService/taskTypes
class AbstractTaskService:	public taskTypes(): string[] {
		const types: string[] = [];
		if (this.isProvideTasksEnabled()) {
			for (const [handle] of this._providers) {
				const type = this._providerTypes.get(handle);
				if (type && this.isTaskProviderEnabled(type)) {
					types.push(type);
				}
			}
		}
		return types;
	}