code: def etalon_definition():
      return {
          "phone_num": FileColumnMeaningType.MSISDN,
          "rep_date": FileColumnMeaningType.DATE,
          "score": FileColumnMeaningType.TARGET,
      }
  
file_path: upgini/tests/test_continuous_dataset.py
imports: import os
  import pandas
  import pytest
  from upgini import Dataset, FileColumnMeaningType
  from upgini.utils.datetime_utils import DateTimeSearchKeyConverter
label_desc: Use image node_id 1 for calling a global function with example usage: etalon_definition() and returns: dict