def __getitem__(self, issuer):
        try:
            return self.issuer_keys[issuer]
        except __HOLE__:
            logger.debug(
                "Available key issuers: {}".format(self.issuer_keys.keys()))
            raise
dataset/ETHPy150Open rohe/pyoidc/src/oic/utils/keyio.py/KeyJar.__getitem__