code: def _init_volume_service(self, version):
          
          volume_cfg = self._load_config_section(CONFIG_VOLUME_SECTION)
          self._token_volume = volume_cfg[CONFIG_TOKEN]
          proto = volume_cfg[CONFIG_PROTOCOL]
          host = volume_cfg[CONFIG_HOST]
  
          self._volume = VolumeService(host, version)
          self._volume.base_protocol = proto
          self._volume.set_auth(self._token_volume)
docs: Method to initialize the Volume Service from the config data
  
          Args:
              version (string): Version of Boss API to use.
  
          Returns:
              None
  
          Raises:
              (KeyError): if given invalid version.