I am trying to configure access to Azure Storage Account (ADLS2) using OAUTH.  The doc here gives an example of how to specify a secret in a cluster's spark configuration

{{secrets/<secret-scope>/<service-credential-key>}}

I can see how this works for secrets stored in a Databricks-backed key vault.

Instead however, I want to access/use a secret stored in an Azure key vault which has its own url etc. 

Any insight & a working example is much appreciated. Thanks Paul