Service Bus and Azure Resource Manager

Hi all,

I am using the ResourceManagementClient to create a service bus namespace. This works well. Next, I need the connectionstring of this newly created service bus namespace to create topics and subscriptions. I need this because I create a full servicebus topology from code. 

Analogue, the same goes for IoTHub. Creating this through ARM (ResourceManagementClient or REST api) is no problem, but getting the connectionstrings is.

How can I get those credentials and connectionstrings through REST api and/or ResourceManagementClient?

thanks