Just password option for credential type in credential libraries

[dfradehubs]

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Hi, In order to retrieve and establish connections with just an access-key (or just a password), i would like to have an option in Credential type just for password. Now we can configure Username + Password and SSH Private Key, but it was perfect if we could configure Password option. Could be possible to have this option? As workaround we are configuring Username = Password, but we think is a bit "tricky". Many thanks, Daniel!