docs: def load(cls, graph, element):
          """
          Instantiates the node in the graph if it's not already stored in the graph
  
          :param graph: The dependency graph this node is a member of
          :type graph: corenlp_xml.dependencies.DependencyGraph
          :param element: The lxml element wrapping the node
          :type element: lxml.ElementBase
  
          """
          node = graph.get_node_by_idx(id(element.get("idx")))
          if node is None:
              node = cls(graph, element)
              graph.register_node(node)
          return node