code: def find_articulation_vertices(graph):
      
  
      articulation_vertices = []
  
      all_nodes = graph.get_all_node_ids()
      if len(all_nodes) == 0:
          return articulation_vertices
  
      # Run the algorithm on each of the connected components of the graph
      components = get_connected_components_as_subgraphs(graph)
      for component in components:
          # --Call the internal articulation vertices function to find
          # --the node list for this particular connected component
          vertex_list = _internal_get_cut_vertex_list(component)
          articulation_vertices.extend(vertex_list)
  
      return articulation_vertices
docs: Finds all of the articulation vertices within a graph.
      Returns a list of all articulation vertices within the graph.
      Returns an empty list for an empty graph.