namespace System.IO.Compression
{
  public enum XzChecksumType
  {
      None = 0,
      Crc32 = 1,
      Crc64 = 2,
      Sha256 = 3,
  }
  public sealed partial class XzCompressionOptions
  {
      public XzCompressionOptions() { }
      public static int DefaultQuality { get { throw null; } }
      public static int DefaultWindowLog { get { throw null; } }
      public static int MaxQuality { get { throw null; } }
      public static int MaxWindowLog { get { throw null; } }
      public static int MinQuality { get { throw null; } }
      public static int MinWindowLog { get { throw null; } }
      public System.IO.Compression.XzChecksumType Checksum { get { throw null; } set { } }
      public int WindowLog { get { throw null; } set { } }
      public bool EnableExtremeMode { get { throw null; } set { } }
      public int Quality { get { throw null; } set { } }
  }
  public sealed partial class XzDecoder : System.IDisposable
  {
      public XzDecoder() { }
      public XzDecoder(int maxWindowLog) { }
      public System.Buffers.OperationStatus Decompress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesConsumed, out int bytesWritten) { throw null; }
      public void Dispose() { }
      public static bool TryDecompress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesWritten) { throw null; }
  }
  public sealed partial class XzEncoder : System.IDisposable
  {
      public XzEncoder() { }
      public XzEncoder(int quality) { }
      public XzEncoder(int quality, int windowLog) { }
      public XzEncoder(System.IO.Compression.XzCompressionOptions compressionOptions) { }
      public System.Buffers.OperationStatus Compress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesConsumed, out int bytesWritten, bool isFinalBlock) { throw null; }
      public void Dispose() { }
      public System.Buffers.OperationStatus Flush(System.Span<byte> destination, out int bytesWritten) { throw null; }
      public static long GetMaxCompressedLength(long inputLength) { throw null; }
      public static bool TryCompress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesWritten) { throw null; }
      public static bool TryCompress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesWritten, int quality) { throw null; }
      public static bool TryCompress(System.ReadOnlySpan<byte> source, System.Span<byte> destination, out int bytesWritten, int quality, int windowLog) { throw null; }
  }
  public sealed partial class XzStream : System.IO.Stream
  {
      public XzStream(System.IO.Stream stream, System.IO.Compression.CompressionLevel compressionLevel, bool leaveOpen = false) { }
      public XzStream(System.IO.Stream stream, System.IO.Compression.CompressionMode mode, bool leaveOpen = false) { }
      public XzStream(System.IO.Stream stream, System.IO.Compression.XzCompressionOptions compressionOptions, bool leaveOpen = false) { }
      public System.IO.Stream BaseStream { get { throw null; } }
      public override bool CanRead { get { throw null; } }
      public override bool CanSeek { get { throw null; } }
      public override bool CanWrite { get { throw null; } }
      public override long Length { get { throw null; } }
      public override long Position { get { throw null; } set { } }
      public override System.IAsyncResult BeginRead(byte[] buffer, int offset, int count, System.AsyncCallback? callback, object? state) { throw null; }
      public override System.IAsyncResult BeginWrite(byte[] buffer, int offset, int count, System.AsyncCallback? callback, object? state) { throw null; }
      protected override void Dispose(bool disposing) { }
      public override System.Threading.Tasks.ValueTask DisposeAsync() { throw null; }
      public override int EndRead(System.IAsyncResult asyncResult) { throw null; }
      public override void EndWrite(System.IAsyncResult asyncResult) { }
      public override void Flush() { }
      public override System.Threading.Tasks.Task FlushAsync(System.Threading.CancellationToken cancellationToken) { throw null; }
      public override int Read(byte[] buffer, int offset, int count) { throw null; }
      public override int Read(System.Span<byte> buffer) { throw null; }
      public override System.Threading.Tasks.Task<int> ReadAsync(byte[] buffer, int offset, int count, System.Threading.CancellationToken cancellationToken) { throw null; }
      public override System.Threading.Tasks.ValueTask<int> ReadAsync(System.Memory<byte> buffer, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
      public override int ReadByte() { throw null; }
      public override long Seek(long offset, System.IO.SeekOrigin origin) { throw null; }
      public override void SetLength(long value) { }
      public override void Write(byte[] buffer, int offset, int count) { }
      public override void Write(System.ReadOnlySpan<byte> buffer) { }
      public override System.Threading.Tasks.Task WriteAsync(byte[] buffer, int offset, int count, System.Threading.CancellationToken cancellationToken) { throw null; }
      public override System.Threading.Tasks.ValueTask WriteAsync(System.ReadOnlyMemory<byte> buffer, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
      public override void WriteByte(byte value) { }
  }
}