@staticmethod
def nested_get(dict, keys, key_delimiter='.'):
    """ Get the value of a nested dictionary at the nested key sequence `keys`

        Args:
            dict (:obj:`dict`): dictionary to retrieve value from
            keys (:obj:`str` or :obj:`list`): list of nested keys to retrieve
            key_delimiter (:obj:`str`, optional): delimiter for `keys`

        Returns:
            :obj:`object`: The value of `dict` from the nested keys list
        """
    if isinstance(keys, str):
        keys = keys.split(key_delimiter)
    nested_dict = dict
    for key in keys:
        nested_dict = nested_dict[key]
    return nested_dict
