How to access a root untyped profile using profInfo.getAllProfiles?

I have a VSCode Explorer extension where I allow the user to manage credentials. This works fine for the instance whereby the secureArgs are present in the system profile - or defined in the default base profile.

However, there is an article from the zowe folk - https://medium.com/zowe/password-management-for-zowe-cli-profiles-c57f64d1fe88 suggesting that the preferred method is to not use the base profile but instead specify a top level root profile that is untyped.

Something like this:

SecureArgs are present in the top level but also in a system profile to allow the user to specifically enter credentials for that system. The problem arises in that there seems to be no obvious method in a VSCode extension to get that top level untyped profile . I use profInfo.readProfilesfromDIsk followed by profInfo.getAllProfiles but you can only retrieve typed profiles.

There doesn't seem to be any way of retrieving that top level untyped profile - or indeed know if such a top level profile exists.
Equally how do I update an untyped profile as profInfo.,updateProperty takes in propOpts one of which iso the profile name - so won't work for an untyped profile.

{
    "$schema": "./zowe.schema.json",
    "profiles": {
     "D001": {
       "properties": {
         "host": "myHost",
          "protocol": "https",
          "rejectUnauthorized": false,
       },
       **"secure": [
         "user",
         "password"
       ],**
       "profiles": {
           "u830all": {
             "type": "zmf",
             "properties": {            
               "port": 9990
             }
         },
           "u830dp": {
             "type": "zmf",
             "properties": {
              "port": 9991
             },
             **"secure": [
                "user",
               "password"
             ]**
          }
        }
       }
     }
  }

zowe / zowe-cli

How to access a root untyped profile using profInfo.getAllProfiles? #2185