code: def _get_optional_parameters(self):
      param = self.model.get_xgb_params
      return param
  
imports: import pickle
  import pandas
  from xgboost.sklearn import XGBRegressor
  from xgboost.sklearn import XGBClassifier
  from zoo.orca.automl.metrics import Evaluator
  from zoo.orca.automl.model.abstract import BaseModel, ModelBuilder
  import logging
label_desc: Use image node_id 11 for calling the XGBoost obj's underlying member method code with example usage: obj._get_optional_parameters() and returns: param