def run(self, *args):
        """Invoke the wrapped script.

        Returns:
            Return code of the command, or 0 if the command is not run.
        """
        if self.prefix_char is None:
            prefix_char = config.suite_alias_prefix_char
        else:
            prefix_char = self.prefix_char

        if prefix_char == '':
            # empty prefix char means we don't support the '+' args
            return self._run_no_args(args)
        else:
            return self._run(prefix_char, args)
Invoke the wrapped script.

        Returns:
            Return code of the command, or 0 if the command is not run.