code: def start_kbs_server():
      """Starts a local KBS server and returns its handler."""
      # Starts a local KBS server.
      options = kbs_server_helper.KnowledgeBankServiceOptions(
          True, -1, 10
      )
      server = kbs_server_helper.KbsServerHelper(options)
      # Placeholder for setting --kbs_address.
      return server
  
file_path: neural-structured-learning/research/carls/testing/test_util.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import typing
  from absl import flags
  from research.carls import dynamic_embedding_config_pb2
  from research.carls import kbs_server_helper_pybind
  from research.carls.candidate_sampling import candidate_sampler_config_pb2
  from google.protobuf import text_format
label_desc: Use image node_id 3 for calling a global function with example usage: start_kbs_server() and returns: server