code: def test_copy(self):
      avcopy = self.adjview.copy()
      assert avcopy[0] == self.adjview[0]
      assert avcopy[0] is not self.adjview[0]
  
      avcopy[2][1]["width"] = 8
      assert avcopy[2] != self.adjview[2]
      self.adjview[2][1]["width"] = 8
      assert avcopy[2] == self.adjview[2]
      del self.adjview[2][1]["width"]
  
      assert not hasattr(self.adjview, "__setitem__")
      assert hasattr(avcopy, "__setitem__")
  
imports: import pickle
  import pytest
  import networkx
label_desc: Use image node_id 4 for calling the TestUnionMultiInner obj's underlying member method code with example usage: obj.test_copy() without return types