docstr: Conversion from graph to array to graph.
code: def test_identity_graph_array(self):
      "Conversion from graph to array to graph."
      A = nx.to_numpy_array(self.G1)
      self.identity_conversion(self.G1, A, nx.Graph())
  
imports: import pytest
  import networkx
  from networkx.generators.classic import barbell_graph, cycle_graph, path_graph
  from networkx.utils import graphs_equal
label_desc: Use image node_id 6 for calling the TestConvertNumpyArray obj's underlying member method code with example usage: obj.test_identity_graph_array() without return types