# System.IO

``` diff
 namespace System.IO {
     public static class WindowsRuntimeStorageExtensions {
+        public static SafeFileHandle CreateSafeFileHandle(this IStorageFile windowsRuntimeFile, FileAccess access = 3, FileShare share = 1, FileOptions options = 0);
+        public static SafeFileHandle CreateSafeFileHandle(this IStorageFolder rootDirectory, string relativePath, FileMode mode);
+        public static SafeFileHandle CreateSafeFileHandle(this IStorageFolder rootDirectory, string relativePath, FileMode mode, FileAccess access, FileShare share = 1, FileOptions options = 0);
     }
 }
```

