def METHOD_NAME(self) -> Dict:
    """
    Returns swapped key-value pairs from aliases where alias is the key.
    :return: dictionary of prefix to relation
    :rtype: Dict
    """
    if self._reversed_aliases:
        return self._reversed_aliases
    METHOD_NAME = {v: k for k, v in self._aliases_new.items()}
    self._reversed_aliases = METHOD_NAME
    return self._reversed_aliases