wip

CryptoExchange.Net/SharedApis/V2/Fees/GetFees/GetFeeOptions.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace CryptoExchange.Net.SharedApis
+{
+    /// <summary>
+    /// Options for requesting trading fee info
+    /// </summary>
+    public class GetFeeOptions : CapabilityOptions<GetFeeRequest, IGetFeesRest>
+    {
+        /// <inheritdoc />
+        public override string Description => "Retrieve trading fee information";
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public GetFeeOptions(string exchange, bool authenticated) : base(exchange, authenticated, nameof(IGetFeesRest.GetFeesAsync))
+        {
+        }
+    }
+}

CryptoExchange.Net/SharedApis/V2/Fees/GetFees/IGetFees.cs

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+using CryptoExchange.Net.Objects;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace CryptoExchange.Net.SharedApis
+{
+    /// <summary>
+    /// Operation for retrieving user trading fees from an exchange.
+    /// </summary>
+    public interface IGetFees : ISharedApiCapability
+    {
+        /// <summary>
+        /// Fee request options.<br />
+        /// Use <see cref="CapabilityOptions.RequiredRequestParameters"/>, <see cref="CapabilityOptions.RequiredExchangeParameters"/> and <see cref="CapabilityOptions.OptionalExchangeParameters"/> to check for required and optional parameters for the request. <br />
+        /// Exchange specific parameters can be added to the request via the `ExchangeParameters` property of the request object.
+        /// </summary>
+        GetFeeOptions GetFeeOptions { get; }
+
+        /// <summary>
+        /// Get trading fees for a symbol, see <see cref="GetFeeOptions"/> for request options and exchange specific required/optional parameters. <br />
+        /// </summary>
+        /// <param name="request">Request info</param>
+        /// <param name="ct">Cancellation token</param>
+        Task<ICallResult<SharedFee>> GetFeesAsync(GetFeeRequest request, CancellationToken ct = default);
+    }
+
+    /// <summary>
+    /// Operation for retrieving user trading fees from an exchange via the REST API.
+    /// </summary>
+    public interface IGetFeesRest : IGetFees, ISharedRest
+    {
+        /// <inheritdoc />
+        new Task<HttpResult<SharedFee>> GetFeesAsync(GetFeeRequest request, CancellationToken ct = default);
+    }
+}