chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
5008 changed files with 910633 additions and 0 deletions
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+/*
+ * 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.Collections.Generic;
+using QuantConnect.Data;
+using QuantConnect.Securities;
+
+namespace QuantConnect.Interfaces
+{
+    /// <summary>
+    /// This interface exposes methods for creating a new <see cref="Security" />
+    /// </summary>
+    public interface ISecurityService
+    {
+        /// <summary>
+        /// Creates a new security
+        /// </summary>
+        /// <remarks>Following the obsoletion of Security.Subscriptions,
+        /// both overloads will be merged removing <see cref="SubscriptionDataConfig"/> arguments</remarks>
+        Security CreateSecurity(Symbol symbol,
+            List<SubscriptionDataConfig> subscriptionDataConfigList,
+            decimal leverage = 0,
+            bool addToSymbolCache = true,
+            Security underlying = null,
+            bool seedSecurity = true);
+
+        /// <summary>
+        /// Creates a new security
+        /// </summary>
+        /// <remarks>Following the obsoletion of Security.Subscriptions,
+        /// both overloads will be merged removing <see cref="SubscriptionDataConfig"/> arguments</remarks>
+        Security CreateSecurity(Symbol symbol,
+            SubscriptionDataConfig subscriptionDataConfig,
+            decimal leverage = 0,
+            bool addToSymbolCache = true,
+            Security underlying = null,
+            bool seedSecurity = true);
+
+        /// <summary>
+        /// Creates a new benchmark security
+        /// </summary>
+        Security CreateBenchmarkSecurity(Symbol symbol);
+    }
+}