Get information from the catalog config file.
        If *key* is `None`, return the full dict.

def get_catalog_info(self, key=None, default=None):
        """
        Get information from the catalog config file.
        If *key* is `None`, return the full dict.
        """
        if key is None:
            return self._init_kwargs

        return self._init_kwargs.get(key, default)