code: def csv_text_with_comments(self):
      return normalize_text(
          """
              # header
              %s
              # comment
              Alice,400
              Edith,600
              # footer
              """
          % self.csv_text
      )
  
imports: import os
  from contextlib import contextmanager
  import pandas
  import numpy
  from pyspark import pandas
  from pyspark.testing.pandasutils import PandasOnSparkTestCase, TestUtils
label_desc: Use image node_id 3 for calling the CsvTestsMixin obj's underlying member method code with example usage: obj.csv_text_with_comments() and returns: normalize_text