code: def search_space(self):
      return dict()
  
file_path: analytics-zoo/pyzoo/zoo/examples/orca/automl/autoxgboost/AutoXGBoostRegressor.py
imports: import argparse
  import os
  from sklearn.model_selection import train_test_split
  from zoo import init_spark_on_local, init_spark_on_yarn
  from zoo.ray import RayContext
  from zoo.orca.automl.xgboost import AutoXGBRegressor
  from zoo.chronos.autots.deprecated.config.recipe import XgbRegressorSkOptRecipe, XgbRegressorGridRandomRecipe
  from zoo.chronos.autots.deprecated.config.base import Recipe
label_desc: Use image node_id 2 for calling the XgbSigOptRecipe obj's underlying member method code with example usage: obj.search_space() and returns: dict