code: def __init__(
      self, arg1: str = "", arg2: NestedFields | None = None, **kwargs
  ):
      super().__init__(**kwargs)
      self.arg1 = arg1
      self.arg2 = arg2
  
imports: from __future__ import annotations
  import warnings
  from typing import TYPE_CHECKING, Any, Sequence
  import attr
  from airflow.models.baseoperator import BaseOperator
  from airflow.models.baseoperatorlink import BaseOperatorLink
  from airflow.models.xcom import XCom
label_desc: Use image node_id 1 to create a new MockOperatorWithNestedFields object from inherited base classes: BaseOperator with example: obj = MockOperatorWithNestedFields(arg1, arg2)