def METHOD_NAME(self, key: str):
    """
    Basic ls of file/dir - without recursion.
    """
    self._verify_filesystem_and_key(key)
    if self._filesystem.isfile(key):
        return key
    remote_path = f"{key}/*"
    files = self._filesystem.glob(remote_path)
    # Get only the files and directories under key path, without the key path itself.
    # for example in a filesystem that has this path: /test_mlrun_dbfs_objects/test.txt
    # listdir with the input /test_mlrun_dbfs_objects as a key will return ['test.txt'].
    files = [pathlib.Path(file).name for file in files if "/" in file]
    return files