<PackageReference Include="System.Security.Principal.Windows" Version="5.0.0-preview.8.20407.11" />

System.Security.Principal.IdentityReferenceCollection

namespace System.Security.Principal { public class IdentityReferenceCollection : ICollection<IdentityReference>, IEnumerable<IdentityReference>, IEnumerable { public int Count { get; } public IdentityReference this[int index] { get; set; } public IdentityReferenceCollection(); public IdentityReferenceCollection(int capacity); public void Add(IdentityReference identity); public void Clear(); public bool Contains(IdentityReference identity); public void CopyTo(IdentityReference[] array, int offset); public IEnumerator<IdentityReference> GetEnumerator(); public bool Remove(IdentityReference identity); public IdentityReferenceCollection Translate(Type targetType); public IdentityReferenceCollection Translate(Type targetType, bool forceSuccess); } }