code: def test_transform(self):
      self.assertRaises(
          AssertionError, self.trans_sample._transform, [], 1
      )
      self.assertRaises(
          AssertionError, self.trans_sample._transform, self.re_data, []
      )
      trans_samples = self.trans_sample._transform(self.re_data, 1)
      for trans_sample in trans_samples:
          self.assertTrue(type(trans_sample) == type(self.re_data))
  
file_path: textflint/test/generation/transformation/RE/test_swap_employee.py
imports: import unittest
  import sys
  import os
  import ssl
  from textflint.input.component.sample.re_sample import RESample
  from textflint.generation.transformation.RE.swap_employee import SwapEmployee
label_desc: Use image node_id 4 for calling the TestEmployeeSwap obj's underlying member method code with example usage: obj.test_transform() without return types