Find Network Containers within a Network Container

[#1]

I'm looking to call an API that will return all the network containers inside a network container. Currently I'm using: 

"https://" + 'INFOBLOX_HOST' + "/wapi/v2.0/network?network_container="+container

to get all the networks, but network containers arn't included

[#2]

Networks and Network Containers are different object types.  So you would need to run two calls, one to retrieve networks and another to retrieve network containers.