# System.Collections.Immutable

``` diff
 namespace System.Collections.Immutable {
     public static class ImmutableHashSet {
+        public static ImmutableHashSet<T> Create<T>(IEqualityComparer<T>? equalityComparer, ReadOnlySpan<T> items);
+        public static ImmutableHashSet<T> Create<T>(ReadOnlySpan<T> items);
     }
     public static class ImmutableList {
+        public static ImmutableList<T> Create<T>(ReadOnlySpan<T> items);
     }
     public static class ImmutableQueue {
+        public static ImmutableQueue<T> Create<T>(ReadOnlySpan<T> items);
     }
     public static class ImmutableSortedSet {
+        public static ImmutableSortedSet<T> Create<T>(IComparer<T>? comparer, ReadOnlySpan<T> items);
+        public static ImmutableSortedSet<T> Create<T>(ReadOnlySpan<T> items);
     }
     public static class ImmutableStack {
+        public static ImmutableStack<T> Create<T>(ReadOnlySpan<T> items);
     }
 }
```

