src/vs/workbench/contrib/files/browser/views/openEditorsView.ts/EditorGroupRenderer/renderElement
class EditorGroupRenderer:	renderElement(editorGroup: IEditorGroup, _index: number, templateData: IEditorGroupTemplateData): void {
		templateData.editorGroup = editorGroup;
		templateData.name.textContent = editorGroup.label;
		templateData.actionBar.context = { groupId: editorGroup.id };
	}