How do I get the list of all available services in the wsas server?

I found the following wsas web service command to getthe details on a specific service:

https://localhost:9443/wso2wsas/services/ServiceAdmin/getServiceData?serviceName=echo

I would like to get a list of al service like you see when your click 'Service' on the WSAS Management Console.

For this instance, the URL on th Management console is:

https://localhost:9443/wso2wsas/#___divListServiceGroups

What is the equivalent wsas web service call?

thanks