code: def test_get_existing_key_v2(self, mock_hvac, mock_get_connection):
      mock_connection = self.get_mock_connection()
      mock_get_connection.return_value = mock_connection
      mock_client = mock.MagicMock()
      mock_hvac.Client.return_value = mock_client
  
      connection_dict = {}
  
      mock_client.secrets.kv.v2.read_secret_version.return_value = {
          "request_id": "94011e25-f8dc-ec29-221b-1f9c1d9ad2ae",
          "lease_id": "",
          "renewable": False,
          "lease_duration": 0,
          "data": {
              "data": {"secret_key": "secret_value"},
              "metadata": {
                  "created_time": "2020-03-16T21:01:43.331126Z",
                  "deletion_time": "",
                  "destroyed": False,
                  "version": 1,
              },
          },
          "wrap_info": None,
          "warnings": None,
          "auth": None,
      }
  
      mock_connection.extra_dejson.get.side_effect = connection_dict.get
      kwargs = {
          "vault_conn_id": "vault_conn_id",
          "auth_type": "token",
          "kv_engine_version": 2,
      }
  
      test_hook = VaultHook(**kwargs)
      secret = test_hook.get_secret(secret_path="missing")
      assert {"secret_key": "secret_value"} == secret
      mock_client.secrets.kv.v2.read_secret_version.assert_called_once_with(
          mount_point="secret",
          path="missing",
          version=None,
          raise_on_deleted_version=True,
      )
  
imports: from __future__ import annotations
  import re
  from unittest import mock
  from unittest.mock import PropertyMock, mock_open, patch
  import pytest
  from hvac.exceptions import VaultError
  from airflow.configuration import AirflowConfigParser
  from airflow.exceptions import AirflowConfigException
  from airflow.providers.hashicorp.hooks.vault import VaultHook
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 37 for calling the TestVaultHook obj's underlying member method code with example usage: obj.test_get_existing_key_v2(mock_hvac, mock_get_connection) without return types