@classmethod
def _map_claim_name_to_instance_var(cls, claim_name: str) ->str:
    """
            Map a claim to the name of its instance variable.

            :param claim_name: The name of the claim to map.
            :return: The name of the corresponding instance variable.
        """
    return cls._instance_var_claim_name_mapping.inv.get(claim_name, claim_name)
