ssh key passphrase with credential type

Hi all,
When using a credential type, is there any way (e.g. ansible magic variable, similar to ansible_ssh_private_key_file) to pass a private key passphrase so that it will be used?

There is an option for a prviate key passphrase in in a machine credential type. Is that what you are looking for or do you have another use case?

-The AWX Team