code: def _get_required_parameters(self):
      return {"feature_num", "output_dim"}
  
imports: import pickle
  import numpy
  import time
  from tensorflow.keras.models import Model
  from tensorflow.keras.layers import *
  from tensorflow.keras.initializers import TruncatedNormal, Constant
  import tensorflow.keras.backend
  import tensorflow
  from bigdl.orca.automl.metrics import Evaluator
  from bigdl.orca.automl.model.abstract import BaseModel
label_desc: Use image node_id 18 for calling the MTNetKeras obj's underlying member method code with example usage: obj._get_required_parameters() and returns: unknown