/// <summary>
/// Gets the list of instrument references for a symbol.
/// </summary>
/// <param name="connection"><see cref="IOpenfeedConnection"/>.</param>
/// <param name="marketId">Market ID for which to obtain the <see cref="InstrumentReferenceResponse"/>.</param>
/// <param name="ct"><see cref="CancellationToken"/>.</param>
/// <returns><see cref="InstrumentReferenceResponse"/>.</returns>
public static Task <InstrumentReferenceResponse> GetInstrumentReferenceAsync(this IOpenfeedConnection connection, long marketId, CancellationToken ct) =>
connection.GetInstrumentReferenceAsync(new InstrumentReferenceRequest {
MarketId = marketId
}, ct);
/// <summary>
/// Gets the list of instrument references for a symbol.
/// </summary>
/// <param name="connection"><see cref="IOpenfeedConnection"/>.</param>
/// <param name="symbol">Symbol for which to obtain the <see cref="InstrumentReferenceResponse"/>.</param>
/// <param name="ct"><see cref="CancellationToken"/>.</param>
/// <returns><see cref="InstrumentReferenceResponse"/>.</returns>
public static Task <InstrumentReferenceResponse> GetInstrumentReferenceAsync(this IOpenfeedConnection connection, string symbol, CancellationToken ct) =>
connection.GetInstrumentReferenceAsync(new InstrumentReferenceRequest {
Symbol = symbol
}, ct);