docstr: Prominent group for single node
docstr_tok: ["Prominent","group","for","single","node"]
code: def test_prominent_group_single_node(self):
      """
      Prominent group for single node
      """
      G = nx.path_graph(5)
      k = 1
      b, g = nx.prominent_group(G, k, normalized=False, endpoints=False)
      b_answer, g_answer = 4.0, [2]
      assert b == b_answer and g == g_answer
  
imports: import pytest
  import networkx
label_desc: Use image node_id 1 for calling the TestProminentGroup obj's underlying member method code with example usage: obj.test_prominent_group_single_node() without return types