When trying to call Rpc with input that has extended types referencing leafref nodes from another module, parsing of Json fails with null pointer exception.

example model:
(nt is network-topology module)
leaf node

leaf-list supporting-tp

leaf tp-id

Bug can be reproduced by calling this rpc from topoproccessing project: http://127.0.0.1:8181/restconf/operations/multilayer-topology:forwarding-adj-announce

input:
{
"input": {
"head-end":

,
"tail-end":

,
"bidirectional" : {}
}
}