# System.Collections.Immutable

``` diff
 namespace System.Collections.Immutable {
-    public struct ImmutableArray<T> : ICollection, ICollection<T>, IEnumerable, IEnumerable<T>, IEquatable<ImmutableArray<T>>, IImmutableList<T>, IList, IList<T>, IReadOnlyCollection<T>, IReadOnlyList<T>, IStructuralComparable, IStructuralEquatable
+    public readonly struct ImmutableArray<T> : ICollection, ICollection<T>, IEnumerable, IEnumerable<T>, IEquatable<ImmutableArray<T>>, IImmutableList<T>, IList, IList<T>, IReadOnlyCollection<T>, IReadOnlyList<T>, IStructuralComparable, IStructuralEquatable
 }
```

