@classmethod<EOL><INDENT>def _path_to_keys(cls, path):<DEDENT>
<EOL>keys = _BaseFrame._path_to_keys_cache.get(path)<EOL>if keys is None:<EOL><INDENT>keys = _BaseFrame._path_to_keys_cache[path] = path.split('<STR_LIT:.>')<EOL><DEDENT>return keys<EOL>
Return a list of keys for a given path