Returns a list of the files under the specified path

def listdir(self, url):
        """Returns a list of the files under the specified path"""
        (store_name, path) = self._split_url(url)
        adapter = self._create_adapter(store_name)
        return [
            "adl://{store_name}.azuredatalakestore.net/{path_to_child}".format(
                store_name=store_name, path_to_child=path_to_child
            )
            for path_to_child in adapter.ls(path)
        ]