code: def execute(self, context: Context):
      self.log.info("Hello World!")
      context["task_instance"].xcom_push(
          key="search_query", value="dummy_value"
      )
  
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 3 for calling the CustomOperator obj's underlying member method code with example usage: obj.execute(context) without return types