# System.Buffers

``` diff
 namespace System.Buffers {
     public static class BuffersExtensions {
-        public static SequencePosition? PositionOf<T>(this in ReadOnlySequence<T> source, T value) where T : IEquatable<T>;
+        public static SequencePosition? PositionOf<T>(this in ReadOnlySequence<T> source, T value) where T : IEquatable<T>?;
     }
 }
```

