src/vs/workbench/browser/parts/editor/editorQuickAccess.ts/ActiveGroupEditorsByMostRecentlyUsedQuickAccess/doGetEditors
class ActiveGroupEditorsByMostRecentlyUsedQuickAccess:	protected doGetEditors(): IEditorIdentifier[] {
		const group = this.editorGroupService.activeGroup;

		return group.getEditors(EditorsOrder.MOST_RECENTLY_ACTIVE).map(editor => ({ editor, groupId: group.id }));
	}