Python Protobuf messages

Hello Everyone,

I have been trying to establish a connection using the official Python SDK

I have been able to authenticate and get account details etc using the Openapi docs and https://spotware.github.io/OpenApiPy/authentication/#auth-uri

But I haven't been able to send or receive protobuf messages

def connected(client): # Callback for client connection
	print("\nConnected")
	request = ProtoOAApplicationAuthReq()
	request.clientId = client_id
	request.clientSecret = secret
	deferred = client.send(request)

Even this throws an error Unresolved reference 'ProtoOAApplicationAuthReq' 
Same thing with all messages.
Is there anything that I should be doing before I can handle protobuf requests in python?
 

Thank you!