NAT RPC's for getting SNAT/DNAT translation information for a given router-uuid/vpn-uuid

With the Current DS structure, it's is bit difficult to identify information about what is the current DNAT/SNAT configuration done fo the given router-uuid/vpn-uuid.

It would be good if we have a RPC's which can provide a information as below.

input- router-uuid/vpn-uuid

SNAT output - router-name, internal-ip/port, external-ip/port,protocol
DNAT output - router-name,internal-ip,floating-ip