Fix commit 0c0c988 StockSharp#660

Author: mikasoukhov

BusinessEntities/EntitiesExtensions.cs

@@ -212,6 +212,13 @@ public static IEnumerable<ExchangeBoard> EnumerateExchangeBoards()
 			.GetMembers<PropertyInfo>(_publicStatic, typeof(ExchangeBoard))
 			.Select(prop => (ExchangeBoard)prop.GetValue(null, null));
 
+	/// <summary>
+	/// All registered candle message types.
+	/// </summary>
+	[Obsolete("Use Extensions.AllCandleTypes property.")]
+	public static IEnumerable<Type> AllCandleMessageTypes
+		=> Messages.Extensions.AllCandleTypes;
+
 	/// <summary>
 	/// To convert the own trade into message.
 	/// </summary>