How to delete PDB database in ODA X7?

I have an ODA X7 HA running 12.2 database.

CDB database has been installed with one PDB.

How can I remove only the PDB database (keeping the CDB)?

I don't see any PDB option on "odacli delete-database" command.

# odacli delete-database -h

Usage: delete-database [options]

  Options:

    --dbName, -in

       Database Name

    --dbid, -i

       Database Resource ID

    --force, -fd

       Forceful delete

    --help, -h

       get help

    --json, -j

       json output

Thanks, Brad.