code: def get_link(self, operator, *, ti_key) -> str:
      return "mock_operator_link"
  
imports: from __future__ import annotations
  from flask import Blueprint
  from flask_appbuilder import BaseView
  from airflow.api_connexion.schemas.plugin_schema import PluginCollection, plugin_collection_schema, plugin_schema
  from airflow.hooks.base import BaseHook
  from airflow.models.baseoperatorlink import BaseOperatorLink
  from airflow.plugins_manager import AirflowPlugin
label_desc: Use image node_id 1 for calling the MockOperatorLink obj's underlying member method code with example usage: obj.get_link(operator) and returns: str