docs: def add_node(self, node_id, name, labels):
          """ Add a node to the graph with name and labels.
              Args:
                  node_id: the unique node_id e.g. 'www.evil4u.com'
                  name: the display name of the node e.g. 'evil4u'
                  labels: a list of labels e.g. ['domain','evil']
              Returns:
                  Nothing
          """
          self.neo_db.add_node(node_id, name, labels)