System.util.zlib.ZStream.free C# (CSharp) Method

        public void free(){
            next_in=null;
            next_out=null;
            msg=null;
            _adler=null;
        }
    }

 public void End()
 {
     if (z == null)
     {
         return;
     }
     z.deflateEnd();
     z.free();
     z = null;
 }