code: def test_transform_name(self):
      transformer = lore.transformers.String("test", "lower")
  
      data = pandas.DataFrame({"test": ["bob", "Bob"]})
      transformed = transformer.transform(data)
      self.assertEqual(transformed.iloc[0], "bob")
      self.assertEqual(transformed.iloc[1], "bob")
  
imports: import unittest
  import datetime
  import math
  import numpy
  import pandas
  import lore.transformers
label_desc: Use image node_id 1 for calling the TestStringLower obj's underlying member method code with example usage: obj.test_transform_name() without return types