Return name of the last dir in path or '' if no dir found.

        Parameters
        ----------
        path: str
            Use dirs in this path
        prefix: str
            Use only dirs startings by this prefix

def _use_last_dir_name(self, path, prefix=''):
        """
        Return name of the last dir in path or '' if no dir found.

        Parameters
        ----------
        path: str
            Use dirs in this path
        prefix: str
            Use only dirs startings by this prefix
        """
        matching_dirs = (
            dir_name
            for dir_name in reversed(os.listdir(path))
            if os.path.isdir(os.path.join(path, dir_name)) and
            dir_name.startswith(prefix)
        )
        return next(matching_dirs, None) or ''