Print a message and log it.

        :param msg: the message
        :type  msg: Unicode string
        :param prefix: the (optional) prefix
        :type  prefix: Unicode string

def print_generic(self, msg, prefix=None):
        """
        Print a message and log it.

        :param msg: the message
        :type  msg: Unicode string
        :param prefix: the (optional) prefix
        :type  prefix: Unicode string
        """
        if prefix is None:
            self._log(msg, Logger.INFO)
        else:
            self._log(msg, prefix)
        if self.use_sys:
            if (prefix is not None) and (prefix in self.PREFIX_TO_PRINT_FUNCTION):
                self.PREFIX_TO_PRINT_FUNCTION[prefix](msg)
            else:
                gf.safe_print(msg)