using System.Collections.Generic; namespace CryptoExchange.Net { public static class ExtensionMethods { public static void AddParameter(this Dictionary parameters, string key, string value) { parameters.Add(key, value); } public static void AddParameter(this Dictionary parameters, string key, object value) { parameters.Add(key, value); } public static void AddOptionalParameter(this Dictionary parameters, string key, object value) { if(value != null) parameters.Add(key, value); } public static void AddOptionalParameter(this Dictionary parameters, string key, string value) { if (value != null) parameters.Add(key, value); } } }