code: def test_find_subtree(self):
      subtree = rms_ins.find_subtree(sample)
      self.assertEqual([(24, 37)], subtree)
  
imports: import unittest
  from textflint.input.component.sample.dp_sample import DPSample
  from textflint.generation.transformation.DP.delete_sub_tree import DeleteSubTree
label_desc: Use image node_id 2 for calling the TestSpecialRemoveSubtree obj's underlying member method code with example usage: obj.test_find_subtree() without return types