docstr: Node(s) in C not in graph, raises NodeNotFound exception
docstr_tok: ["Node","(","s",")","in","C","not","in","graph",",","raises","NodeNotFound","exception"]
code: def test_group_betweenness_node_not_in_graph(self):
      """
      Node(s) in C not in graph, raises NodeNotFound exception
      """
      with pytest.raises(nx.NodeNotFound):
          nx.group_betweenness_centrality(nx.path_graph(5), [4, 7, 8])
  
imports: import pytest
  import networkx
label_desc: Use image node_id 7 for calling the TestGroupBetweennessCentrality obj's underlying member method code with example usage: obj.test_group_betweenness_node_not_in_graph() without return types