docstr: save all configs to file.
  :param config_file:
  :return:
docstr_tok: ["save","all","configs","to","file",".",":","param","config_file",":",":","return",":"]
code: def config_save(self, config_file=None):
      """
      save all configs to file.
      :param config_file:
      :return:
      """
      config_file = config_file or os.path.join(
          DEFAULT_CONFIG_DIR, "{}_{}.json".format(self.name, self.time)
      )
      save_config(config_file, self.config, replace=True)
      return config_file
  
file_path: analytics-zoo/pyzoo/zoo/chronos/autots/deprecated/pipeline/time_sequence.py
imports: import os
  import time
  from zoo.chronos.autots.deprecated.feature.utils import save_config
  from zoo.chronos.autots.deprecated.pipeline.base import Pipeline
  from zoo.chronos.autots.deprecated.model.time_sequence import TimeSequenceModel
  from zoo.chronos.autots.deprecated.pipeline.parameters import DEFAULT_CONFIG_DIR, DEFAULT_PPL_DIR
  from zoo.chronos.utils import deprecated
label_desc: Use image node_id 9 for calling the TimeSequencePipeline obj's underlying member method code with example usage: obj.config_save(config_file) and returns: config_file