Im making use of the following node library [azure-keyvault](https://www.npmjs.com/package/azure-keyvault) to get retrieve stored secrets from azure keyvault. Ive only found the `client.getSecret` api exposed to retrieve a secret value. Im searching for a way to retrieve multiple secret values in one call. I hav'nt found one yet. Is there a way to do this that i'm missing or its simply not supported.