code: def get_link(self, operator, *, ti_key):
      search_query = XCom.get_one(
          task_id=ti_key.task_id,
          dag_id=ti_key.dag_id,
          run_id=ti_key.run_id,
          key="search_query",
      )
      return f"http://google.com/custom_base_link?search={search_query}"
  
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 for calling the CustomOpLink obj's underlying member method code with example usage: obj.get_link(operator) and returns: str, search_query