using System.Runtime.InteropServices;
ReadOnlyMemory<byte> cached = new byte[1_048_576].AsMemory(0, 12);
MemoryMarshal.TryGetArray(cached, out ArraySegment<byte> before);
Console.WriteLine($"view:{cached.Length};backing:{before.Array!.Length}");
// The extracted segment is itself an owner; clear it before discussing release.
before = default;
cached = cached.ToArray();
MemoryMarshal.TryGetArray(cached, out ArraySegment<byte> after);
Console.WriteLine($"copied-view:{cached.Length};backing:{after.Array!.Length}");
Console.WriteLine("This proves backing identity/length, not immediate collection or RSS shrinkage.");
GC.KeepAlive(cached);