docs: def insert_node_node(**kw):
      """
      Link a node to another node. node_id -> target_node_id.  Where `node_id` is
      the parent and `target_node_id` is the child.
      """
      with current_app.app_context():
          insert_query(name='select_link_node_from_node.sql', node_id=kw.get('node_id'))
          db.execute(text(fetch_query_string('insert_node_node.sql')), **kw)