update the imports for _storage_v2

Author: Pulkit0110

google/cloud/storage/_experimental/grpc_client.py

@@ -15,7 +15,7 @@
 """A client for interacting with Google Cloud Storage using the gRPC API."""
 
 from google.cloud.client import ClientWithProject
-from google.cloud import storage_v2
+from google.cloud import _storage_v2 as storage_v2
 
 _marker = object()
 

tests/unit/test_grpc_client.py

@@ -19,7 +19,7 @@
 
 class TestGrpcClient(unittest.TestCase):
     @mock.patch("google.cloud.client.ClientWithProject.__init__")
-    @mock.patch("google.cloud.storage_v2.StorageClient")
+    @mock.patch("google.cloud._storage_v2.StorageClient")
     def test_constructor_defaults_and_options(
         self, mock_storage_client, mock_base_client
     ):
@@ -63,7 +63,7 @@ def test_constructor_defaults_and_options(
         self.assertIs(client._grpc_client, mock_storage_client.return_value)
 
     @mock.patch("google.cloud.storage._experimental.grpc_client.ClientWithProject")
-    @mock.patch("google.cloud.storage_v2.StorageClient")
+    @mock.patch("google.cloud._storage_v2.StorageClient")
     def test_constructor_can_enable_direct_path(
         self, mock_storage_client, mock_base_client
     ):
@@ -86,7 +86,7 @@ def test_constructor_can_enable_direct_path(
         )
 
     @mock.patch("google.cloud.storage._experimental.grpc_client.ClientWithProject")
-    @mock.patch("google.cloud.storage_v2.StorageClient")
+    @mock.patch("google.cloud._storage_v2.StorageClient")
     def test_constructor_handles_api_key(self, mock_storage_client, mock_base_client):
         from google.cloud.storage._experimental import grpc_client