code: def load_config_yaml(self, flags, config_dict):
          
          if config_dict is None:
              print('Config File not specified. Using only input flags.')
              return flags
          try:
              config_yaml_dict = self.cfg_from_file(flags['YAML_FILE'], config_dict)
          except KeyError:
              print('Yaml File not specified. Using only input flags and config file.')
              return config_dict
          print('Using input flags, config file, and yaml file.')
          config_yaml_flags_dict = self._merge_a_into_b_simple(flags, config_yaml_dict)
          return config_yaml_flags_dict
docs: Load config dict and yaml dict and then override both with flags dict.