code: def psdf(self):
      return ps.from_pandas(self.pdf)
  
file_path: spark/python/pyspark/pandas/tests/resample/test_timezone.py
imports: import unittest
  import os
  import numpy
  import pandas
  from pyspark import pandas
  from pyspark.testing.pandasutils import PandasOnSparkTestCase, TestUtils
label_desc: Use image node_id 4 for calling the ResampleTimezoneMixin obj's underlying member method code with example usage: obj.psdf() and returns: ps