code: def test_get_existing_key_v1_version(self, mock_hvac):
      mock_client = mock.MagicMock()
      mock_hvac.Client.return_value = mock_client
      vault_client = _VaultClient(
          auth_type="token",
          token="s.7AU0I51yv1Q1lxOIg1F3ZRAS",
          url="http://localhost:8180",
          kv_engine_version=1,
      )
      with pytest.raises(VaultError, match="Secret version"):
          vault_client.get_secret(
              secret_path="missing", secret_version=1
          )
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import mock_open, patch
  import pytest
  from hvac.exceptions import InvalidPath, VaultError
  from requests import Session
  from requests.adapters import HTTPAdapter
  from urllib3.util import Retry
  from airflow.providers.hashicorp._internal_client.vault_client import _VaultClient
label_desc: Use image node_id 48 for calling the TestVaultClient obj's underlying member method code with example usage: obj.test_get_existing_key_v1_version(mock_hvac) without return types