Short story: https://git.opendaylight.org/gerrit/#/c/20130/2 was not cherry-picked to stable/lithium yet.

Longer story:
For example, ipv6-routes JSON output currently looks like this:
{
"afi": "bgp-types:ipv6-address-family",
"attributes": {},
"ipv6-routes": {},
"safi": "bgp-types:unicast-subsequent-address-family"
},
but it should look like this:
{
"afi": "bgp-types:ipv6-address-family",
"attributes":

,
"ipv6-routes": {},
"safi": "bgp-types:unicast-subsequent-address-family"
},