This method retrieves all supported currencies on our payment gateway. For payload explanations for both request and response, click here 
using OneKhusa.SDK; 
using OneKhusa.SDK.Models.StaticMaintenance.Currencies; 

//code omitted for brevity 

OneKhusaResponse<List<GetCurrenciesResponse>> response = await client 
    .StaticMaintenance 
    .Currencies 
    .GetCurrenciesAsync(); 

if (response is { IsSuccess: true, Data: not null }) 
{ 
    foreach (var currency in response.Data) 
    { 
        Console.WriteLine($""" 
            CurrencyCode: {currency.CurrencyCode}; 
            CurrencyName: {currency.CurrencyName} 
        """); 
    } 
    Console.ReadLine(); 
    return; 
} 
//it means an error has occurred: RFC7807 compliant error object
Console.WriteLine($"""
        Type: {response.Error?.Type};
        Title: {response.Error?.Title};
        Detail: {response.Error?.Detail};
        ErrorCode: {response.Error?.ErrorCode};
        Status: {response.Error?.Status};
        Instance: {response.Error?.Instance};
        Errors: {string.Join(";", response.Error?.Errors ?? [])}
""");
Console.ReadLine();