code: def complex_pdf(self):
      psers = {
          "this_array": self.pser,
          "that_array": pd.Series([[2, 3, 4]]),
          "this_struct": pd.Series([("x", 1)]),
          "that_struct": pd.Series([("a", 2)]),
      }
      return pd.concat(psers, axis=1)
  
imports: import decimal
  import datetime
  import pandas
  from pyspark import pandas
  from pyspark.testing.pandasutils import PandasOnSparkTestCase
  from pyspark.pandas.tests.data_type_ops.testing_utils import OpsTestBase
label_desc: Use image node_id 12 for calling the ComplexOpsTestsMixin obj's underlying member method code with example usage: obj.complex_pdf() and returns: pd