atmSymbols property
override
JSON array of [ceSymbolInfo, peSymbolInfo] for the ATM strike,
nearest expiry. Required for scalper right-panel initialization.
Awaited on scalper init, so it's safe to resolve this after
background data (e.g. option chain) finishes loading. Resolve to
null to leave the right panel blank.
Implementation
@override
Future<String?> get atmSymbols => _data.invokeMethod<String>('atmSymbols');