code: def testMultipleImports(self):
      text = "import foo.bar as a, foo.baz as b, foo.baz.c, foo.d"
      expected_text = (
          "import bar.bar as a, foo.baz as b, foo.baz.c, bar.d"
      )
      _, new_text = self._upgrade(RenameImports(), text)
      self.assertEqual(expected_text, new_text)
  
      text = "from foo import baz, a, c"
      expected_text = """from foo import baz
  from bar import a, c"""
      _, new_text = self._upgrade(RenameImports(), text)
      self.assertEqual(expected_text, new_text)
  
imports: import ast
  import io
  import os
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
  from tensorflow.tools.compatibility import ast_edits
label_desc: Use image node_id 19 for calling the TestAstEdits obj's underlying member method code with example usage: obj.testMultipleImports() without return types