Add a child node to a navigation node
post
                    /v1/portal/navigationnodes/{id}/childNodes
                Returns the child node to be added. Please note, this operation can be used to add a Page or NavigationNode.
                The following tables summarize the client request.
Path Parameters
                                | Name | Description | Format | 
|---|---|---|
| id | the short id of the parent node that the child node will be added to | string | 
Body Parameter
                                reference of the child node to be added
                                    
                                    
                                The following tables summarize the server response.
400 Response
                                    Bad request: ill-formatted content in request
                                
                                
                                
                            403 Response
                                    Invalid utoken supplied
                                
                                
                                
                            404 Response
                                    Invalid short id supplied