code: def test_neighbors(self):
      G = self.G()
      G.add_edges_from(
          [("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]
      )
      G.add_nodes_from("GJK")
      assert sorted(G["A"]) == ["B", "C"]
      assert sorted(G.neighbors("A")) == ["B", "C"]
      assert sorted(G.neighbors("A")) == ["B", "C"]
      assert sorted(G.neighbors("G")) == []
      pytest.raises(nx.NetworkXError, G.neighbors, "j")
  
imports: import pytest
  import networkx
  from networkx import convert_node_labels_to_integers
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 29 for calling the HistoricalTests obj's underlying member method code with example usage: obj.test_neighbors() without return types