IronRuby.Builtins.RubyBufferedStream.FlushRead C# (CSharp) Method

        private void FlushRead() {
            // unwind cached data:
            if (ReadAheadCount > 0) {
                Seek(-ReadAheadCount, SeekOrigin.Current);
            }

            _bufferStart = _bufferCount = _pushedBackCount = 0;
        }