code: def initialize(self, config):
          
          assert config.workflowID is None
          config.workflowID = str(uuid4())
          logger.debug("The workflow ID is: '%s'" % config.workflowID)
          self.__config = config
          self.writeConfig()
docs: Create the physical storage for this job store, allocate a workflow ID and persist the
          given Toil configuration to the store.
  
          :param toil.common.Config config: the Toil configuration to initialize this job store
                 with. The given configuration will be updated with the newly allocated workflow ID.
  
          :raises JobStoreExistsException: if the physical storage for this job store already exists