src/vs/workbench/contrib/notebook/browser/controller/coreActions.ts/NotebookAction/getEditorContextFromArgsOrActive
class NotebookAction:	protected getEditorContextFromArgsOrActive(accessor: ServicesAccessor, context?: any, ...additionalArgs: any[]): INotebookActionContext | undefined {
		return getContextFromActiveEditor(accessor.get(IEditorService));
	}