code: def data_dictionary(self):
      return self._data_dictionary
  
file_path: AIX360/aix360/algorithms/rule_induction/trxf/pmml_export/reader/trxf_reader.py
imports: from typing import Dict
  import numpy
  import pandas
  from aix360.algorithms.rule_induction.trxf.classifier import ruleset_classifier
  from aix360.algorithms.rule_induction.trxf.classifier.ruleset_classifier import RuleSetClassifier
  from aix360.algorithms.rule_induction.trxf.core import Conjunction, Relation
  from aix360.algorithms.rule_induction.trxf.pmml_export import models
  from aix360.algorithms.rule_induction.trxf.pmml_export.models.data_dictionary import Value
  from aix360.algorithms.rule_induction.trxf.pmml_export.reader import AbstractReader
  from aix360.algorithms.rule_induction.trxf.pmml_export.models import SimplePredicate, Operator, CompoundPredicate, BooleanOperator
label_desc: Use image node_id 2 for calling the TrxfReader obj's underlying member method code with example usage: obj.data_dictionary() and returns: self