def METHOD_NAME(self):
    classification_paths = []
    # calculate the classification paths
    from portality.lcc import lcc # inline import since this hits the database
    for subs in self.subjects():
        scheme = subs.get("scheme")
        term = subs.get("term")
        if scheme == "LCC":
            p = lcc.pathify(term)
            if p is not None:
                classification_paths.append(p)
    # normalise the classification paths, so we only store the longest ones
    classification_paths = lcc.longest(classification_paths)
    return classification_paths