allPremiumIndexes method
Mark Price and Funding Rate for all tickers
Implementation
Future<Either<String, List<PremiumIndex>>> allPremiumIndexes() {
return sendRequest(
path: 'fapi/v1/premiumIndex',
type: RequestType.GET,
).then((r) => r.isLeft
? Left(r.left)
: Right(List<PremiumIndex>.from(
r.right.map((e) => PremiumIndex.fromMap(e)))));
}