src/vs/workbench/contrib/files/browser/views/openEditorsView.ts/EditorGroupRenderer/renderTemplate
class EditorGroupRenderer:	renderTemplate(container: HTMLElement): IEditorGroupTemplateData {
		const editorGroupTemplate: IEditorGroupTemplateData = Object.create(null);
		editorGroupTemplate.root = dom.append(container, $('.editor-group'));
		editorGroupTemplate.name = dom.append(editorGroupTemplate.root, $('span.name'));
		editorGroupTemplate.actionBar = new ActionBar(container);

		const saveAllInGroupAction = this.instantiationService.createInstance(SaveAllInGroupAction, SaveAllInGroupAction.ID, SaveAllInGroupAction.LABEL);
		const saveAllInGroupKey = this.keybindingService.lookupKeybinding(saveAllInGroupAction.id);
		editorGroupTemplate.actionBar.push(saveAllInGroupAction, { icon: true, label: false, keybinding: saveAllInGroupKey ? saveAllInGroupKey.getLabel() : undefined });

		const closeGroupAction = this.instantiationService.createInstance(CloseGroupAction, CloseGroupAction.ID, CloseGroupAction.LABEL);
		const closeGroupActionKey = this.keybindingService.lookupKeybinding(closeGroupAction.id);
		editorGroupTemplate.actionBar.push(closeGroupAction, { icon: true, label: false, keybinding: closeGroupActionKey ? closeGroupActionKey.getLabel() : undefined });

		return editorGroupTemplate;
	}