How to use the hickle.lookup.hkl_types_dict.get function in hickle

def load_dataset_lookup(key):
    """ What type of object are we trying to unpickle?  This is a python
    dictionary based equivalent of a case statement.  It returns the type
    a given 'type' keyword in the hickle file.

    Args:
        py_obj: python object to look-up what function to use to dump to disk

    Returns:
        match: function that should be used to dump data to a new dataset
    """

    match = hkl_types_dict.get(key, no_match_load)

    return match