-/**
- * Extracts a space-delimited fragment from an IRC message
- * @param raw Raw Message
- * @param start Current index into the message, will be advanced automatically
- * @param end End of fragment, if already known. Default is -1, in which case it will be set to the next whitespace
- * character or the end of the string
- * @param prefix Required prefix. Default is 0. If set, this only parses a fragment if it starts with the given prefix.
- * @return Fragment
- */
-QByteArray extractFragment(const QByteArray& raw, int& start, int end = -1, char prefix = 0)
+QByteArray IrcDecoder::extractFragment(const QByteArray& raw, int& start, int end, char prefix)