src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts/AbstractTaskService/getTasksForGroup
class AbstractTaskService:	private getTasksForGroup(group: string): Promise<Task[]> {
		return this.getGroupedTasks().then((groups) => {
			let result: Task[] = [];
			groups.forEach((tasks) => {
				for (let task of tasks) {
					if (task.configurationProperties.group === group) {
						result.push(task);
					}
				}
			});
			return result;
		});
	}