Fix usage of add_paths_for_children_of_node
Fix usage of add_paths_for_children_of_node

- Rather than adding children of the project which may be files or folders, call add_paths_for_children_of_node with the project
- calling this method on a file raises an exception

Duke-GCB/DukeDSHandoverService,Duke-GCB/DukeDSHandoverService,Duke-GCB/DukeDSHandoverService