def at_times(data_core, dsn, tags, times):
    """
    Get the value of the tags at the given time
    :param data_core: A data core client instance
    :param dsn: The fully qualified name of a data source
    :param tags: A list of tag names
    :param times: the list of times to fetch values for.
    """
    return data_core.get_data_at_times({dsn: tags}, times)