Get app parameters that can be set/get

How can we get all the parameters anmes that an app support by occ commands?

Take this example:
occ config:app:set theming name value "Test"

How can we get all the values like AndroidClientUrl, iOSClientUrl, etc. (these are supported by the theming app) and this for each app so they can be passed as

occ config:app:set appName paramName ?


What about the occ command line help:

> ./occ config:

  Command "config:" is ambiguous.
  Did you mean one of these?
      config:app:delete    Delete an app config value
      config:app:get       Get an app config value
      config:app:set       Set an app config value
      config:import        Import a list of configs
      config:list          List all configs
      config:system:delete Delete a system config value
      config:system:get    Get a system config value
      config:system:set    Set a system config value.
> ./occ config:list --help
  List all configs

  config:list [options] [--] [<app>]

  app                    Name of the app ("system" to get the config.php values, "all" for all apps and system) [default: "all"]

      --output[=OUTPUT]  Output format (plain, json or json_pretty, default is plain) [default: "json_pretty"]
      --private          Use this option when you want to include sensitive configs like passwords, salts, ...
  -h, --help             Display this help message
  -q, --quiet            Do not output any message
  -V, --version          Display this application version
      --ansi             Force ANSI output
      --no-ansi          Disable ANSI output
  -n, --no-interaction   Do not ask any interactive question
      --no-warnings      Skip global warnings, show command output only
  -v|vv|vvv, --verbose   Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

I’ve tried it, but:

"theming": {
            "backgroundMime": "image\/png",
            "cachebuster": "43",
            "color": "#3b9e95",
            "enabled": "yes",
            "faviconMime": "image\/png",
            "installed_version": "1.11.0",
            "logoMime": "image\/svg+xml",
            "logoheaderMime": "image\/svg+xml",
            "name": "Cloud",
            "slogan": "***REMOVED SENSITIVE VALUE***",
            "types": "logging",
            "url": "***REMOVED SENSITIVE VALUE***"

Where are the two parameters i’ve set as example in the 1st post?
like AndroidClientUrl , iOSClientUrl ?