void useStream( const std::string& streamName ) {
std::streambuf* newBuf = Context::createStreamBuf( streamName );
setStreamBuf( newBuf );
delete m_streambuf;
m_streambuf = newBuf;
}
void useStream( std::string const& streamName ) {
Stream stream = createStream( streamName );
setStreamBuf( stream.streamBuf );
m_stream.release();
m_stream = stream;
}
