docs: def _set_task_uuid(self, dependencies):
          """Adds universally unique user ids (UUID) to each task of the workflow.
  
          :param dependencies: The list of dependencies between tasks defining the computational graph
          :type dependencies: list(Dependency)
          :return: A dictionary mapping UUID to dependencies
          :rtype: dict(str: Dependency)
          """
          uuid_dict = {}
          for dep in dependencies:
              task = dep.task
              if task.private_task_config.uuid in uuid_dict:
                  raise ValueError('EOWorkflow cannot execute the same instance of EOTask multiple times')
  
              task.private_task_config.uuid = self.id_gen.next()
              uuid_dict[task.private_task_config.uuid] = dep
  
          return uuid_dict