In cx_Oracle, in order to connect to an oracle database over LDAP, we need to create a sqlnet.ora file and ldap.ora file. In oracledb's thin mode, [sqlnet.ora is not supported](https://python-oracledb.readthedocs.io/en/latest/user_guide/initialization.html#optnetfiles), and presumably ldap.ora file is not either. Is it possible to connect over LDAP in oracledb's thin mode? If so, how do we do it?