code: def pser(self):
      return pd.Series(
          pd.date_range("1994-1-31 10:30:15", periods=3, freq="D")
      )
  
imports: import datetime
  import pandas
  from pandas.api.types import CategoricalDtype
  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 1 for calling the DatetimeOpsTestsMixin obj's underlying member method code with example usage: obj.pser() and returns: pd