code: def _init_dummy_features(self):
      return {
          "numeric": np.random.randn(self.DUMMY_DF_LENGTH),
          "onehot": np.array(
              [
                  np.eye(self.DUMMY_ONEHOT_LENGTH)[i]
                  for i in np.random.randint(
                      0, self.DUMMY_ONEHOT_LENGTH, self.DUMMY_DF_LENGTH
                  )
              ]
          ),
          "binary": np.random.randint(0, 2, self.DUMMY_DF_LENGTH),
      }
  
imports: import pytest
  import joblib
  import os
  import json
  import numpy
  import pandas
  from itertools import product
  import matplotlib
  from abc import ABC, abstractmethod
  import warnings
label_desc: Use image node_id 2 for calling the DummyDataGenerator obj's underlying member method code with example usage: obj._init_dummy_features() and returns: dict