<PackageReference Include="System.Collections.Immutable" Version="11.0.0-preview.7.26381.103" />

System.Collections.Immutable.ImmutableSortedSet

public static class ImmutableSortedSet
Provides a set of initialization methods for instances of the ImmutableSortedSet<T> class. NuGet package: System.Collections.Immutable (about immutable collections and how to install)
namespace System.Collections.Immutable { public static class ImmutableSortedSet { public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(IComparer<T> comparer); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(T item); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(IComparer<T> comparer, T item); public static ImmutableSortedSet<T> CreateRange<[Nullable(2)] T>(IEnumerable<T> items); public static ImmutableSortedSet<T> CreateRange<[Nullable(2)] T>(IComparer<T> comparer, IEnumerable<T> items); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(params T[] items); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(ReadOnlySpan<T> items); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(IComparer<T> comparer, params T[] items); public static ImmutableSortedSet<T> Create<[Nullable(2)] T>(IComparer<T> comparer, ReadOnlySpan<T> items); public static ImmutableSortedSet<T>.Builder CreateBuilder<[Nullable(2)] T>(); public static ImmutableSortedSet<T>.Builder CreateBuilder<[Nullable(2)] T>(IComparer<T> comparer); public static ImmutableSortedSet<TSource> ToImmutableSortedSet<[Nullable(2)] TSource>(this IEnumerable<TSource> source, IComparer<TSource> comparer); public static ImmutableSortedSet<TSource> ToImmutableSortedSet<[Nullable(2)] TSource>(this IEnumerable<TSource> source); public static ImmutableSortedSet<TSource> ToImmutableSortedSet<[Nullable(2)] TSource>(this ImmutableSortedSet<TSource>.Builder builder); } }