# System.IO.Packaging

``` diff
 namespace System.IO.Packaging {
     public static class PackUriHelper {
+        public static int ComparePackUri(Uri firstPackUri, Uri secondPackUri);
+        public static Uri Create(Uri packageUri);
+        public static Uri Create(Uri packageUri, Uri partUri);
+        public static Uri Create(Uri packageUri, Uri partUri, string fragment);
+        public static Uri GetPackageUri(Uri packUri);
+        public static Uri GetPartUri(Uri packUri);
     }
 }
```

