Still no NVL2 in PL/SQL 12.2

[oracle@stormking cdb12201 ~]$ sqlplus /nolog @ conn.pdba.u.sql

SQL*Plus: Release 12.2.0.1.0 Production on Wed Oct 18 19:09:35 2017

Copyright (c) 1982, 2016, Oracle.  All rights reserved.

Connected.
SQL> declare n number; begin n := nvl(0,0); end;
  2  /

PL/SQL procedure successfully completed.

SQL> declare n number; begin n := nvl2(0,0,0); end;
  2  /
declare n number; begin n := nvl2(0,0,0); end;
                             *
ERROR at line 1:
ORA-06550: line 1, column 30:
PLS-00201: identifier 'NVL2' must be declared
ORA-06550: line 1, column 25:
PL/SQL: Statement ignored