_out._bytes.writeUnchecked((c>=0&&c<256)?c:'?');
_out._generator.uncheckedAddContent((c>=0&&c<256)?c:'?');
        public void writeIso1 (char[] s,int offset, int length) throws IOException        {            if (_out._closed)                throw new IOException("Closed");                        _space= _generator.prepareUncheckedAddContent();            if (_space<0)                throw new IOException("Closed");                int end=offset+length;            for (int i=offset;i<end;i++)            {                // Block until we can add _content.                if (_space<1 && _generator._endp.isOpen())                {                    _generator.completeUncheckedAddContent();                    _out.flush();                    _space= _generator.prepareUncheckedAddContent();                }                                int c=s[i];                _out._bytes.writeUnchecked((c>=0&&c<256)?c:'?');             }            _space-=length;            _generator.completeUncheckedAddContent();            if (_space==0 && _generator._endp.isOpen())                _out.flush();        }