chore: import upstream snapshot with attribution

Common/DefaultConverter.cs

@@ -0,0 +1,60 @@
+/*
+ * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+ * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+using System;
+using Newtonsoft.Json;
+
+namespace QuantConnect
+{
+    /// <summary>
+    /// Helper json converter to use the default json converter, breaking inheritance json converter
+    /// </summary>
+    public class DefaultConverter : JsonConverter
+    {
+        /// <summary>
+        /// Indicates if this object can be read
+        /// </summary>
+        public override bool CanRead => false;
+
+        /// <summary>
+        /// Indicates if this object can be written
+        /// </summary>
+        public override bool CanWrite => false;
+
+        /// <summary>
+        /// Writes a JSON file from the given object and the other arguments
+        /// </summary>
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            throw new NotImplementedException();
+        }
+
+        /// <summary>
+        /// Creates an object from a given JSON reader and other arguments
+        /// </summary>
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            throw new NotImplementedException();
+        }
+
+        /// <summary>
+        /// Indicates if the given type can be assigned to this object
+        /// </summary>
+        public override bool CanConvert(Type objectType)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}