def remove_key(self, issuer, key_type, key):
        try:
            kcs = self.issuer_keys[issuer]
        except __HOLE__:
            return

        for kc in kcs:
            kc.remove_key(key_type, key)
            if len(kc) == 0:
                self.issuer_keys[issuer].remove(kc)
dataset/ETHPy150Open rohe/pyoidc/src/oic/utils/keyio.py/KeyJar.remove_key