class_docstr: Mixing implementing common dependency setting methods like >> and <<.
docstr: Mark a task as setup task.
code: def as_setup(self) -> DependencyMixin:
      """Mark a task as setup task."""
      raise NotImplementedError()
  
imports: from __future__ import annotations
  import warnings
  from abc import ABCMeta, abstractmethod
  from typing import TYPE_CHECKING, Any, Iterable, Sequence
  from airflow.exceptions import AirflowException, RemovedInAirflow3Warning
  from airflow.utils.types import NOTSET
label_desc: Use image node_id 5 for calling the DependencyMixin obj's underlying member method code with example usage: obj.as_setup() without return types