Unity Project

reference
https://cardgames.io/yahtzee/

Library/PackageCache/com.unity.ide.rider@1.1.4/Rider/Editor/ProjectGeneration/FileIOProvider.cs

@@ -0,0 +1,23 @@
+using System;
+using System.IO;
+using System.Text;
+
+namespace Packages.Rider.Editor {
+  class FileIOProvider : IFileIO
+  {
+    public bool Exists(string fileName)
+    {
+      return File.Exists(fileName);
+    }
+
+    public string ReadAllText(string fileName)
+    {
+      return File.ReadAllText(fileName);
+    }
+
+    public void WriteAllText(string fileName, string content)
+    {
+      File.WriteAllText(fileName, content, Encoding.UTF8);
+    }
+  }
+}