code: def test_pop_valid_subplot_prop(self):
      val = self.layout.xaxis2
      self.assertEqual(self.layout.pop("xaxis2"), val)
      self.assertEqual(self.layout.xaxis2, go.layout.XAxis())
  
file_path: plotly.py/packages/python/plotly/plotly/tests/test_core/test_graph_objs/test_graph_objs.py
imports: from unittest import TestCase
  import plotly.graph_objs
label_desc: Use image node_id 5 for calling the TestPop obj's underlying member method code with example usage: obj.test_pop_valid_subplot_prop() without return types