[RFC4741] 7.5.8. NETCONF <edit-config> Operations
Containers can be created, deleted, replaced, and modified through
<edit-config>, by using the "operation" attribute, in the container's XML element.
If a container does not have a "presence" statement and the lastchild node is deleted, the NETCONF server MAY delete the container.
netconfd-pro does NOT delete a parent non-presence container after the last child node is deleted.