- doReturn(Optional.of(node)).when(subTree).getModifiedChild(IPV4_ROUTES_IDENTIFIER);
- doReturn(Optional.of(node)).when(node).getModifiedChild(new NodeIdentifier(Ipv4Route.QNAME));
- final Collection<DataTreeCandidateNode> emptyCollection = new HashSet<>();
- doReturn(emptyCollection).when(node).getChildNodes();
+ doReturn(node).when(subTree).modifiedChild(IPV4_ROUTES_IDENTIFIER);
+ doReturn(node).when(node).modifiedChild(new NodeIdentifier(Ipv4Route.QNAME));
+ doReturn(Set.of()).when(node).childNodes();