docstr: Group betweenness centrality in a greedy algorithm
docstr_tok: ["Group","betweenness","centrality","in","a","greedy","algorithm"]
code: def test_prominent_group_greedy_algorithm(self):
      """
      Group betweenness centrality in a greedy algorithm
      """
      G = nx.cycle_graph(7)
      k = 2
      b, g = nx.prominent_group(
          G, k, normalized=True, endpoints=True, greedy=True
      )
      b_answer, g_answer = 1.7, [6, 3]
      assert b == b_answer and g == g_answer
  
imports: import pytest
  import networkx
label_desc: Use image node_id 7 for calling the TestProminentGroup obj's underlying member method code with example usage: obj.test_prominent_group_greedy_algorithm() without return types