code: def create_simple_search_space():
      return {
          "lr": hp.uniform(0.001, 0.01),
          "batch_size": hp.choice([32, 64]),
      }
  
imports: from bigdl.orca.test_zoo_utils import ZooTestCase
  from bigdl.orca.automl.search import SearchEngineFactory
  from bigdl.orca.automl.search.ray_tune import RayTuneSearchEngine
  from bigdl.orca.automl.model.base_pytorch_model import PytorchModelBuilder
  import torch
  import torch.nn
  from bigdl.orca.automl import hp
  import numpy
  from bigdl.orca import init_orca_context, stop_orca_context
label_desc: Use image node_id 1 for calling a global function with example usage: create_simple_search_space() and returns: dict