def nested_dict_add(dictionary, value, *keys):
    """Nested adding in a dictionary.

    Parameters
    ----------
        dictionary : dict
            The dictionary that is going to be parsed.

        value : object
            The value that is going to be added.

        keys : list(hashable)
            A list of keys.
    Returns
    -------
    None.

    """
    address = dictionary
    for k in keys[:-1]:
        if k not in address:
            address[k] = dict()
        address = address[k]
    address[keys[-1]] = value
