feat: reordering

CarManagerV3/LegacyException.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CarManagerV3
+{
+    /// <summary>
+    /// LegacyException is a custom exception class used to indicate that a file is in a legacy format that cannot be read by the current version of the application. It is thrown when the SafeManager encounters a file format that it does not recognize, allowing the application to handle this specific case separately from other types of exceptions.
+    /// </summary>
+    /// <seealso cref="System.Exception" />
+    internal class LegacyException : Exception
+    {
+    }
+}