code: def udt_pdf(self):
      sparse_values = {0: 0.2, 1: 1.0}
      psers = {
          "this": self.pser,
          "that": pd.Series(
              [SparseVector(len(sparse_values), sparse_values)]
          ),
      }
      return pd.concat(psers, axis=1)
  
imports: import pandas
  import pyspark.pandas
  from pyspark.ml.linalg import SparseVector
  from pyspark.testing.pandasutils import PandasOnSparkTestCase
  from pyspark.pandas.tests.data_type_ops.testing_utils import OpsTestBase
label_desc: Use image node_id 3 for calling the UDTOpsTestsMixin obj's underlying member method code with example usage: obj.udt_pdf() and returns: pd