linux-packaging-mono/mcs/class/referencesource/System/sys/system/IO/compression/IDeflater.cs

using System.Diagnostics.Contracts;

namespace System.IO.Compression {

    internal interface IDeflater : IDisposable {
        [Pure] bool NeedsInput();
        void SetInput(byte[] inputBuffer, int startIndex, int count);
        int GetDeflateOutput(byte[] outputBuffer);
        bool Finish(byte[] outputBuffer, out int bytesRead);
    }
}