code: def test_update_product_no_explicit_name(self, get_conn):
      # Given
      product = Product()
      update_product_method = get_conn.return_value.update_product
      update_product_method.return_value = product
      product_name = ProductSearchClient.product_path(
          PROJECT_ID_TEST, LOC_ID_TEST, PRODUCT_ID_TEST
      )
      # When
      result = self.hook.update_product(
          location=LOC_ID_TEST,
          product_id=PRODUCT_ID_TEST,
          product=product,
          update_mask=None,
          project_id=PROJECT_ID_TEST,
          retry=DEFAULT,
          timeout=None,
          metadata=(),
      )
      # Then
      assert result == MessageToDict(product._pb)
      update_product_method.assert_called_once_with(
          product=Product(name=product_name),
          metadata=(),
          retry=DEFAULT,
          timeout=None,
          update_mask=None,
      )
  
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from google.api_core.gapic_v1.method import DEFAULT
  from google.cloud.vision_v1 import AnnotateImageRequest, AnnotateImageResponse, EntityAnnotation, Feature, Product, ProductSearchClient, ProductSet, ReferenceImage, SafeSearchAnnotation
  from google.protobuf.json_format import MessageToDict
  from airflow.exceptions import AirflowException
  from airflow.providers.google.cloud.hooks.vision import ERR_DIFF_NAMES, ERR_UNABLE_TO_CREATE, CloudVisionHook
  from airflow.providers.google.common.consts import CLIENT_INFO
  from tests.providers.google.cloud.utils.base_gcp_mock import mock_base_gcp_hook_default_project_id
label_desc: Use image node_id 23 for calling the TestGcpVisionHook obj's underlying member method code with example usage: obj.test_update_product_no_explicit_name(get_conn) without return types