code: def _get_required_parameters(self):
      return {
          "input_dim",
          "output_dim",
      } | super()._get_required_parameters()
  
file_path: BigDL/python/chronos/src/bigdl/chronos/model/tf1/VanillaLSTM_keras.py
imports: from bigdl.orca.automl.model.base_keras_model import KerasBaseModel
  from collections.abc import Iterable
  import numpy
label_desc: Use image node_id 3 for calling the VanillaLSTM obj's underlying member method code with example usage: obj._get_required_parameters() and returns: unknown