class_docstr: echo transformer
class_docstr_tok: ["echo","transformer"]
code: def _get_optional_parameters(self):
      return set()
  
file_path: analytics-zoo/pyzoo/zoo/chronos/autots/deprecated/feature/identity_transformer.py
imports: from zoo.chronos.autots.deprecated.feature.utils import save_config
  from zoo.chronos.autots.deprecated.feature.abstract import BaseFeatureTransformer
label_desc: Use image node_id 7 for calling the IdentityTransformer obj's underlying member method code with example usage: obj._get_optional_parameters() and returns: set