diff --git a/asset/apiv1beta1/asset_client_example_test.go b/asset/apiv1beta1/asset_client_example_test.go
index 11fb083..bc2bd0d 100644
--- a/asset/apiv1beta1/asset_client_example_test.go
+++ b/asset/apiv1beta1/asset_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/asset/apiv1beta1"
+	asset "cloud.google.com/go/asset/apiv1beta1"
 	assetpb "google.golang.org/genproto/googleapis/cloud/asset/v1beta1"
 )
 
diff --git a/asset/v1beta1/asset_client_example_test.go b/asset/v1beta1/asset_client_example_test.go
index 6288dfc..160f171 100644
--- a/asset/v1beta1/asset_client_example_test.go
+++ b/asset/v1beta1/asset_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/asset/v1beta1"
+	asset "cloud.google.com/go/asset/v1beta1"
 	assetpb "google.golang.org/genproto/googleapis/cloud/asset/v1beta1"
 )
 
diff --git a/bigquery/datatransfer/apiv1/data_transfer_client_example_test.go b/bigquery/datatransfer/apiv1/data_transfer_client_example_test.go
index 6d9db24..6e43c6b 100644
--- a/bigquery/datatransfer/apiv1/data_transfer_client_example_test.go
+++ b/bigquery/datatransfer/apiv1/data_transfer_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/bigquery/datatransfer/apiv1"
+	datatransfer "cloud.google.com/go/bigquery/datatransfer/apiv1"
 	"google.golang.org/api/iterator"
 	datatransferpb "google.golang.org/genproto/googleapis/cloud/bigquery/datatransfer/v1"
 )
diff --git a/cloudtasks/apiv2beta2/cloud_tasks_client_example_test.go b/cloudtasks/apiv2beta2/cloud_tasks_client_example_test.go
index e8c1db7..4c28934 100644
--- a/cloudtasks/apiv2beta2/cloud_tasks_client_example_test.go
+++ b/cloudtasks/apiv2beta2/cloud_tasks_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/cloudtasks/apiv2beta2"
+	cloudtasks "cloud.google.com/go/cloudtasks/apiv2beta2"
 	"google.golang.org/api/iterator"
 	taskspb "google.golang.org/genproto/googleapis/cloud/tasks/v2beta2"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
diff --git a/cloudtasks/apiv2beta3/cloud_tasks_client_example_test.go b/cloudtasks/apiv2beta3/cloud_tasks_client_example_test.go
index 0bc453d..477cba2 100644
--- a/cloudtasks/apiv2beta3/cloud_tasks_client_example_test.go
+++ b/cloudtasks/apiv2beta3/cloud_tasks_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/cloudtasks/apiv2beta3"
+	cloudtasks "cloud.google.com/go/cloudtasks/apiv2beta3"
 	"google.golang.org/api/iterator"
 	taskspb "google.golang.org/genproto/googleapis/cloud/tasks/v2beta3"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
diff --git a/container/apiv1/cluster_manager_client_example_test.go b/container/apiv1/cluster_manager_client_example_test.go
index 8e98f43..ffd9861 100644
--- a/container/apiv1/cluster_manager_client_example_test.go
+++ b/container/apiv1/cluster_manager_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/container/apiv1"
+	container "cloud.google.com/go/container/apiv1"
 	containerpb "google.golang.org/genproto/googleapis/container/v1"
 )
 
diff --git a/containeranalysis/apiv1beta1/container_analysis_v1_beta1_client_example_test.go b/containeranalysis/apiv1beta1/container_analysis_v1_beta1_client_example_test.go
index c19e767..78c7bd9 100644
--- a/containeranalysis/apiv1beta1/container_analysis_v1_beta1_client_example_test.go
+++ b/containeranalysis/apiv1beta1/container_analysis_v1_beta1_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/containeranalysis/apiv1beta1"
+	containeranalysis "cloud.google.com/go/containeranalysis/apiv1beta1"
 	"google.golang.org/api/iterator"
 	containeranalysispb "google.golang.org/genproto/googleapis/devtools/containeranalysis/v1beta1"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
diff --git a/containeranalysis/apiv1beta1/grafeas_v1_beta1_client_example_test.go b/containeranalysis/apiv1beta1/grafeas_v1_beta1_client_example_test.go
index c3ef335..55e8e47 100644
--- a/containeranalysis/apiv1beta1/grafeas_v1_beta1_client_example_test.go
+++ b/containeranalysis/apiv1beta1/grafeas_v1_beta1_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/containeranalysis/apiv1beta1"
+	containeranalysis "cloud.google.com/go/containeranalysis/apiv1beta1"
 	"google.golang.org/api/iterator"
 	grafeaspb "google.golang.org/genproto/googleapis/devtools/containeranalysis/v1beta1/grafeas"
 )
diff --git a/dataproc/apiv1/cluster_controller_client_example_test.go b/dataproc/apiv1/cluster_controller_client_example_test.go
index f0864dc..103cde0 100644
--- a/dataproc/apiv1/cluster_controller_client_example_test.go
+++ b/dataproc/apiv1/cluster_controller_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1"
+	dataproc "cloud.google.com/go/dataproc/apiv1"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1"
 )
diff --git a/dataproc/apiv1/job_controller_client_example_test.go b/dataproc/apiv1/job_controller_client_example_test.go
index ba9e90b..eaaf5b6 100644
--- a/dataproc/apiv1/job_controller_client_example_test.go
+++ b/dataproc/apiv1/job_controller_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1"
+	dataproc "cloud.google.com/go/dataproc/apiv1"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1"
 )
diff --git a/dataproc/apiv1/workflow_template_client_example_test.go b/dataproc/apiv1/workflow_template_client_example_test.go
index e2e4375..0756d4b 100644
--- a/dataproc/apiv1/workflow_template_client_example_test.go
+++ b/dataproc/apiv1/workflow_template_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1"
+	dataproc "cloud.google.com/go/dataproc/apiv1"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1"
 )
diff --git a/dataproc/apiv1beta2/cluster_controller_client_example_test.go b/dataproc/apiv1beta2/cluster_controller_client_example_test.go
index d56a2c7..f6c18bc 100644
--- a/dataproc/apiv1beta2/cluster_controller_client_example_test.go
+++ b/dataproc/apiv1beta2/cluster_controller_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1beta2"
+	dataproc "cloud.google.com/go/dataproc/apiv1beta2"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1beta2"
 )
diff --git a/dataproc/apiv1beta2/job_controller_client_example_test.go b/dataproc/apiv1beta2/job_controller_client_example_test.go
index e7983b9..588d0a7 100644
--- a/dataproc/apiv1beta2/job_controller_client_example_test.go
+++ b/dataproc/apiv1beta2/job_controller_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1beta2"
+	dataproc "cloud.google.com/go/dataproc/apiv1beta2"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1beta2"
 )
diff --git a/dataproc/apiv1beta2/workflow_template_client_example_test.go b/dataproc/apiv1beta2/workflow_template_client_example_test.go
index 02a4990..56c971f 100644
--- a/dataproc/apiv1beta2/workflow_template_client_example_test.go
+++ b/dataproc/apiv1beta2/workflow_template_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dataproc/apiv1beta2"
+	dataproc "cloud.google.com/go/dataproc/apiv1beta2"
 	"google.golang.org/api/iterator"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1beta2"
 )
diff --git a/debugger/apiv2/controller2_client_example_test.go b/debugger/apiv2/controller2_client_example_test.go
index c26754d..cbe64c3 100644
--- a/debugger/apiv2/controller2_client_example_test.go
+++ b/debugger/apiv2/controller2_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/debugger/apiv2"
+	debugger "cloud.google.com/go/debugger/apiv2"
 	clouddebuggerpb "google.golang.org/genproto/googleapis/devtools/clouddebugger/v2"
 )
 
diff --git a/debugger/apiv2/debugger2_client_example_test.go b/debugger/apiv2/debugger2_client_example_test.go
index 510f34f..a7a9cb8 100644
--- a/debugger/apiv2/debugger2_client_example_test.go
+++ b/debugger/apiv2/debugger2_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/debugger/apiv2"
+	debugger "cloud.google.com/go/debugger/apiv2"
 	clouddebuggerpb "google.golang.org/genproto/googleapis/devtools/clouddebugger/v2"
 )
 
diff --git a/dialogflow/apiv2/agents_client_example_test.go b/dialogflow/apiv2/agents_client_example_test.go
index 88604bc..43cf3d3 100644
--- a/dialogflow/apiv2/agents_client_example_test.go
+++ b/dialogflow/apiv2/agents_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	"google.golang.org/api/iterator"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
diff --git a/dialogflow/apiv2/contexts_client_example_test.go b/dialogflow/apiv2/contexts_client_example_test.go
index 7085a08..d8192a5 100644
--- a/dialogflow/apiv2/contexts_client_example_test.go
+++ b/dialogflow/apiv2/contexts_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	"google.golang.org/api/iterator"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
diff --git a/dialogflow/apiv2/entity_types_client_example_test.go b/dialogflow/apiv2/entity_types_client_example_test.go
index 0fc5a51..4dab88d 100644
--- a/dialogflow/apiv2/entity_types_client_example_test.go
+++ b/dialogflow/apiv2/entity_types_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	"google.golang.org/api/iterator"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
diff --git a/dialogflow/apiv2/intents_client_example_test.go b/dialogflow/apiv2/intents_client_example_test.go
index 4da1435..bedb628 100644
--- a/dialogflow/apiv2/intents_client_example_test.go
+++ b/dialogflow/apiv2/intents_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	"google.golang.org/api/iterator"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
diff --git a/dialogflow/apiv2/session_entity_types_client_example_test.go b/dialogflow/apiv2/session_entity_types_client_example_test.go
index bedbd36..43afd89 100644
--- a/dialogflow/apiv2/session_entity_types_client_example_test.go
+++ b/dialogflow/apiv2/session_entity_types_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	"google.golang.org/api/iterator"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
diff --git a/dialogflow/apiv2/sessions_client_example_test.go b/dialogflow/apiv2/sessions_client_example_test.go
index 4ee1eb7..e6b91eb 100644
--- a/dialogflow/apiv2/sessions_client_example_test.go
+++ b/dialogflow/apiv2/sessions_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/dialogflow/apiv2"
+	dialogflow "cloud.google.com/go/dialogflow/apiv2"
 	dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
 )
 
diff --git a/dlp/apiv2/dlp_client_example_test.go b/dlp/apiv2/dlp_client_example_test.go
index 5bac658..aef8deb 100644
--- a/dlp/apiv2/dlp_client_example_test.go
+++ b/dlp/apiv2/dlp_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/dlp/apiv2"
+	dlp "cloud.google.com/go/dlp/apiv2"
 	"google.golang.org/api/iterator"
 	dlppb "google.golang.org/genproto/googleapis/privacy/dlp/v2"
 )
diff --git a/errorreporting/apiv1beta1/error_group_client_example_test.go b/errorreporting/apiv1beta1/error_group_client_example_test.go
index 42a0eb3..de8435c 100644
--- a/errorreporting/apiv1beta1/error_group_client_example_test.go
+++ b/errorreporting/apiv1beta1/error_group_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/errorreporting/apiv1beta1"
+	errorreporting "cloud.google.com/go/errorreporting/apiv1beta1"
 	clouderrorreportingpb "google.golang.org/genproto/googleapis/devtools/clouderrorreporting/v1beta1"
 )
 
diff --git a/errorreporting/apiv1beta1/error_stats_client_example_test.go b/errorreporting/apiv1beta1/error_stats_client_example_test.go
index 29c0bce..fdcf75a 100644
--- a/errorreporting/apiv1beta1/error_stats_client_example_test.go
+++ b/errorreporting/apiv1beta1/error_stats_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/errorreporting/apiv1beta1"
+	errorreporting "cloud.google.com/go/errorreporting/apiv1beta1"
 	"google.golang.org/api/iterator"
 	clouderrorreportingpb "google.golang.org/genproto/googleapis/devtools/clouderrorreporting/v1beta1"
 )
diff --git a/errorreporting/apiv1beta1/report_errors_client_example_test.go b/errorreporting/apiv1beta1/report_errors_client_example_test.go
index 80f4392..eb1db09 100644
--- a/errorreporting/apiv1beta1/report_errors_client_example_test.go
+++ b/errorreporting/apiv1beta1/report_errors_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/errorreporting/apiv1beta1"
+	errorreporting "cloud.google.com/go/errorreporting/apiv1beta1"
 	clouderrorreportingpb "google.golang.org/genproto/googleapis/devtools/clouderrorreporting/v1beta1"
 )
 
diff --git a/expr/apiv1alpha1/cel_client_example_test.go b/expr/apiv1alpha1/cel_client_example_test.go
index 9d97ba9..598cac1 100644
--- a/expr/apiv1alpha1/cel_client_example_test.go
+++ b/expr/apiv1alpha1/cel_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/expr/apiv1alpha1"
+	expr "cloud.google.com/go/expr/apiv1alpha1"
 	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
 )
 
diff --git a/expr/apiv1alpha1/conformance_client_example_test.go b/expr/apiv1alpha1/conformance_client_example_test.go
index 77e9667..2f33942 100644
--- a/expr/apiv1alpha1/conformance_client_example_test.go
+++ b/expr/apiv1alpha1/conformance_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/expr/apiv1alpha1"
+	expr "cloud.google.com/go/expr/apiv1alpha1"
 	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
 )
 
diff --git a/firestore/apiv1beta1/firestore_client_example_test.go b/firestore/apiv1beta1/firestore_client_example_test.go
index d4d9804..7836867 100644
--- a/firestore/apiv1beta1/firestore_client_example_test.go
+++ b/firestore/apiv1beta1/firestore_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/firestore/apiv1beta1"
+	firestore "cloud.google.com/go/firestore/apiv1beta1"
 	"google.golang.org/api/iterator"
 	firestorepb "google.golang.org/genproto/googleapis/firestore/v1beta1"
 )
diff --git a/iam/admin/apiv1/iam_client_example_test.go b/iam/admin/apiv1/iam_client_example_test.go
index 77e95b1..1caa8c3 100644
--- a/iam/admin/apiv1/iam_client_example_test.go
+++ b/iam/admin/apiv1/iam_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/iam/admin/apiv1"
+	admin "cloud.google.com/go/iam/admin/apiv1"
 	"google.golang.org/api/iterator"
 	adminpb "google.golang.org/genproto/googleapis/iam/admin/v1"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
diff --git a/iam/credentials/apiv1/iam_credentials_client_example_test.go b/iam/credentials/apiv1/iam_credentials_client_example_test.go
index 221b3fa..0aed266 100644
--- a/iam/credentials/apiv1/iam_credentials_client_example_test.go
+++ b/iam/credentials/apiv1/iam_credentials_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/iam/credentials/apiv1"
+	credentials "cloud.google.com/go/iam/credentials/apiv1"
 	credentialspb "google.golang.org/genproto/googleapis/iam/credentials/v1"
 )
 
diff --git a/kms/apiv1/key_management_client_example_test.go b/kms/apiv1/key_management_client_example_test.go
index 842e9da..77a9002 100644
--- a/kms/apiv1/key_management_client_example_test.go
+++ b/kms/apiv1/key_management_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/kms/apiv1"
+	kms "cloud.google.com/go/kms/apiv1"
 	"google.golang.org/api/iterator"
 	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
 )
diff --git a/language/apiv1/language_client_example_test.go b/language/apiv1/language_client_example_test.go
index aa4dd53..df8c6e4 100644
--- a/language/apiv1/language_client_example_test.go
+++ b/language/apiv1/language_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/language/apiv1"
+	language "cloud.google.com/go/language/apiv1"
 	languagepb "google.golang.org/genproto/googleapis/cloud/language/v1"
 )
 
diff --git a/language/apiv1beta2/language_client_example_test.go b/language/apiv1beta2/language_client_example_test.go
index 00f2844..2d4c0cf 100644
--- a/language/apiv1beta2/language_client_example_test.go
+++ b/language/apiv1beta2/language_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/language/apiv1beta2"
+	language "cloud.google.com/go/language/apiv1beta2"
 	languagepb "google.golang.org/genproto/googleapis/cloud/language/v1beta2"
 )
 
diff --git a/logging/apiv2/config_client_example_test.go b/logging/apiv2/config_client_example_test.go
index 19ee32a..5462d58 100644
--- a/logging/apiv2/config_client_example_test.go
+++ b/logging/apiv2/config_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/logging/apiv2"
+	logging "cloud.google.com/go/logging/apiv2"
 	"google.golang.org/api/iterator"
 	loggingpb "google.golang.org/genproto/googleapis/logging/v2"
 )
diff --git a/logging/apiv2/logging_client_example_test.go b/logging/apiv2/logging_client_example_test.go
index 8efa6d2..edaad8f 100644
--- a/logging/apiv2/logging_client_example_test.go
+++ b/logging/apiv2/logging_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/logging/apiv2"
+	logging "cloud.google.com/go/logging/apiv2"
 	"google.golang.org/api/iterator"
 	loggingpb "google.golang.org/genproto/googleapis/logging/v2"
 )
diff --git a/logging/apiv2/metrics_client_example_test.go b/logging/apiv2/metrics_client_example_test.go
index ca4f988..404aea7 100644
--- a/logging/apiv2/metrics_client_example_test.go
+++ b/logging/apiv2/metrics_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/logging/apiv2"
+	logging "cloud.google.com/go/logging/apiv2"
 	"google.golang.org/api/iterator"
 	loggingpb "google.golang.org/genproto/googleapis/logging/v2"
 )
diff --git a/longrunning/autogen/operations_client_example_test.go b/longrunning/autogen/operations_client_example_test.go
index 1283423..a080e55 100644
--- a/longrunning/autogen/operations_client_example_test.go
+++ b/longrunning/autogen/operations_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/longrunning/autogen"
+	longrunning "cloud.google.com/go/longrunning/autogen"
 	"google.golang.org/api/iterator"
 	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
 )
diff --git a/longrunning/longrunning.go b/longrunning/longrunning.go
index 270cd1c..639482a 100644
--- a/longrunning/longrunning.go
+++ b/longrunning/longrunning.go
@@ -30,7 +30,7 @@
 	autogen "cloud.google.com/go/longrunning/autogen"
 	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes"
-	"github.com/googleapis/gax-go"
+	gax "github.com/googleapis/gax-go"
 	pb "google.golang.org/genproto/googleapis/longrunning"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
diff --git a/monitoring/apiv3/alert_policy_client_example_test.go b/monitoring/apiv3/alert_policy_client_example_test.go
index 7477e38..90c1420 100644
--- a/monitoring/apiv3/alert_policy_client_example_test.go
+++ b/monitoring/apiv3/alert_policy_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3"
 	"google.golang.org/api/iterator"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
diff --git a/monitoring/apiv3/group_client_example_test.go b/monitoring/apiv3/group_client_example_test.go
index eb51155..7667acd 100644
--- a/monitoring/apiv3/group_client_example_test.go
+++ b/monitoring/apiv3/group_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3"
 	"google.golang.org/api/iterator"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
diff --git a/monitoring/apiv3/metric_client_example_test.go b/monitoring/apiv3/metric_client_example_test.go
index aa1f066..4333792 100644
--- a/monitoring/apiv3/metric_client_example_test.go
+++ b/monitoring/apiv3/metric_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3"
 	"google.golang.org/api/iterator"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
diff --git a/monitoring/apiv3/notification_channel_client_example_test.go b/monitoring/apiv3/notification_channel_client_example_test.go
index 3690937..e1915ed 100644
--- a/monitoring/apiv3/notification_channel_client_example_test.go
+++ b/monitoring/apiv3/notification_channel_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3"
 	"google.golang.org/api/iterator"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
diff --git a/monitoring/apiv3/uptime_check_client_example_test.go b/monitoring/apiv3/uptime_check_client_example_test.go
index 6ddc382..f04a358 100644
--- a/monitoring/apiv3/uptime_check_client_example_test.go
+++ b/monitoring/apiv3/uptime_check_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/monitoring/apiv3"
+	monitoring "cloud.google.com/go/monitoring/apiv3"
 	"google.golang.org/api/iterator"
 	monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
 )
diff --git a/oslogin/apiv1/os_login_client_example_test.go b/oslogin/apiv1/os_login_client_example_test.go
index 6f80959..86da7f1 100644
--- a/oslogin/apiv1/os_login_client_example_test.go
+++ b/oslogin/apiv1/os_login_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/oslogin/apiv1"
+	oslogin "cloud.google.com/go/oslogin/apiv1"
 	osloginpb "google.golang.org/genproto/googleapis/cloud/oslogin/v1"
 )
 
diff --git a/oslogin/apiv1beta/os_login_client_example_test.go b/oslogin/apiv1beta/os_login_client_example_test.go
index 05b9c41..d4851fb 100644
--- a/oslogin/apiv1beta/os_login_client_example_test.go
+++ b/oslogin/apiv1beta/os_login_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/oslogin/apiv1beta"
+	oslogin "cloud.google.com/go/oslogin/apiv1beta"
 	osloginpb "google.golang.org/genproto/googleapis/cloud/oslogin/v1beta"
 )
 
diff --git a/pubsub/apiv1/publisher_client_example_test.go b/pubsub/apiv1/publisher_client_example_test.go
index 936ba6c..560623a 100644
--- a/pubsub/apiv1/publisher_client_example_test.go
+++ b/pubsub/apiv1/publisher_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/pubsub/apiv1"
+	pubsub "cloud.google.com/go/pubsub/apiv1"
 	"google.golang.org/api/iterator"
 	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
 )
diff --git a/pubsub/apiv1/pubsub_pull_example_test.go b/pubsub/apiv1/pubsub_pull_example_test.go
index 21fe761..c44a473 100644
--- a/pubsub/apiv1/pubsub_pull_example_test.go
+++ b/pubsub/apiv1/pubsub_pull_example_test.go
@@ -20,7 +20,7 @@
 	"log"
 	"time"
 
-	"cloud.google.com/go/pubsub/apiv1"
+	pubsub "cloud.google.com/go/pubsub/apiv1"
 	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
 )
 
diff --git a/pubsub/apiv1/subscriber_client_example_test.go b/pubsub/apiv1/subscriber_client_example_test.go
index 52f9504..cd12f01 100644
--- a/pubsub/apiv1/subscriber_client_example_test.go
+++ b/pubsub/apiv1/subscriber_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/pubsub/apiv1"
+	pubsub "cloud.google.com/go/pubsub/apiv1"
 	"google.golang.org/api/iterator"
 	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
 )
diff --git a/redis/apiv1/cloud_redis_client_example_test.go b/redis/apiv1/cloud_redis_client_example_test.go
index ad6eca9..182ea80 100644
--- a/redis/apiv1/cloud_redis_client_example_test.go
+++ b/redis/apiv1/cloud_redis_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/redis/apiv1"
+	redis "cloud.google.com/go/redis/apiv1"
 	"google.golang.org/api/iterator"
 	redispb "google.golang.org/genproto/googleapis/cloud/redis/v1"
 )
diff --git a/redis/apiv1beta1/cloud_redis_client_example_test.go b/redis/apiv1beta1/cloud_redis_client_example_test.go
index ea9416c..0741267 100644
--- a/redis/apiv1beta1/cloud_redis_client_example_test.go
+++ b/redis/apiv1beta1/cloud_redis_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/redis/apiv1beta1"
+	redis "cloud.google.com/go/redis/apiv1beta1"
 	"google.golang.org/api/iterator"
 	redispb "google.golang.org/genproto/googleapis/cloud/redis/v1beta1"
 )
diff --git a/scheduler/apiv1beta1/cloud_scheduler_client_example_test.go b/scheduler/apiv1beta1/cloud_scheduler_client_example_test.go
index 65fbbb9..f748ba0 100644
--- a/scheduler/apiv1beta1/cloud_scheduler_client_example_test.go
+++ b/scheduler/apiv1beta1/cloud_scheduler_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/scheduler/apiv1beta1"
+	scheduler "cloud.google.com/go/scheduler/apiv1beta1"
 	"google.golang.org/api/iterator"
 	schedulerpb "google.golang.org/genproto/googleapis/cloud/scheduler/v1beta1"
 )
diff --git a/securitycenter/apiv1beta1/security_center_client_example_test.go b/securitycenter/apiv1beta1/security_center_client_example_test.go
index 049c918..33209b6 100644
--- a/securitycenter/apiv1beta1/security_center_client_example_test.go
+++ b/securitycenter/apiv1beta1/security_center_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/securitycenter/apiv1beta1"
+	securitycenter "cloud.google.com/go/securitycenter/apiv1beta1"
 	"google.golang.org/api/iterator"
 	securitycenterpb "google.golang.org/genproto/googleapis/cloud/securitycenter/v1beta1"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
diff --git a/spanner/admin/database/apiv1/database_admin_client_example_test.go b/spanner/admin/database/apiv1/database_admin_client_example_test.go
index 3ef3d2c..6fdb9d3 100644
--- a/spanner/admin/database/apiv1/database_admin_client_example_test.go
+++ b/spanner/admin/database/apiv1/database_admin_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/spanner/admin/database/apiv1"
+	database "cloud.google.com/go/spanner/admin/database/apiv1"
 	"google.golang.org/api/iterator"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
 	databasepb "google.golang.org/genproto/googleapis/spanner/admin/database/v1"
diff --git a/spanner/admin/instance/apiv1/instance_admin_client_example_test.go b/spanner/admin/instance/apiv1/instance_admin_client_example_test.go
index c27c113..3e6576d 100644
--- a/spanner/admin/instance/apiv1/instance_admin_client_example_test.go
+++ b/spanner/admin/instance/apiv1/instance_admin_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/spanner/admin/instance/apiv1"
+	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
 	"google.golang.org/api/iterator"
 	iampb "google.golang.org/genproto/googleapis/iam/v1"
 	instancepb "google.golang.org/genproto/googleapis/spanner/admin/instance/v1"
diff --git a/spanner/apiv1/spanner_client_example_test.go b/spanner/apiv1/spanner_client_example_test.go
index cca8087..b4c2311 100644
--- a/spanner/apiv1/spanner_client_example_test.go
+++ b/spanner/apiv1/spanner_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/spanner/apiv1"
+	spanner "cloud.google.com/go/spanner/apiv1"
 	"google.golang.org/api/iterator"
 	spannerpb "google.golang.org/genproto/googleapis/spanner/v1"
 )
diff --git a/spanner/integration_test.go b/spanner/integration_test.go
index efa65cb..694f9e0 100644
--- a/spanner/integration_test.go
+++ b/spanner/integration_test.go
@@ -33,7 +33,7 @@
 	"cloud.google.com/go/civil"
 	"cloud.google.com/go/internal/testutil"
 	"cloud.google.com/go/internal/uid"
-	"cloud.google.com/go/spanner/admin/database/apiv1"
+	database "cloud.google.com/go/spanner/admin/database/apiv1"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 	adminpb "google.golang.org/genproto/googleapis/spanner/admin/database/v1"
diff --git a/spanner/statement.go b/spanner/statement.go
index 0b148c1..9b5a611 100644
--- a/spanner/statement.go
+++ b/spanner/statement.go
@@ -20,8 +20,8 @@
 	"errors"
 	"fmt"
 
-	"github.com/golang/protobuf/ptypes/struct"
 	proto3 "github.com/golang/protobuf/ptypes/struct"
+	structpb "github.com/golang/protobuf/ptypes/struct"
 	sppb "google.golang.org/genproto/googleapis/spanner/v1"
 	"google.golang.org/grpc/codes"
 )
diff --git a/speech/apiv1/speech_client_example_test.go b/speech/apiv1/speech_client_example_test.go
index fc311f4..db8ddc1 100644
--- a/speech/apiv1/speech_client_example_test.go
+++ b/speech/apiv1/speech_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/speech/apiv1"
+	speech "cloud.google.com/go/speech/apiv1"
 	speechpb "google.golang.org/genproto/googleapis/cloud/speech/v1"
 )
 
diff --git a/speech/apiv1p1beta1/speech_client_example_test.go b/speech/apiv1p1beta1/speech_client_example_test.go
index b76f36b..d44ab5d 100644
--- a/speech/apiv1p1beta1/speech_client_example_test.go
+++ b/speech/apiv1p1beta1/speech_client_example_test.go
@@ -20,7 +20,7 @@
 	"context"
 	"io"
 
-	"cloud.google.com/go/speech/apiv1p1beta1"
+	speech "cloud.google.com/go/speech/apiv1p1beta1"
 	speechpb "google.golang.org/genproto/googleapis/cloud/speech/v1p1beta1"
 )
 
diff --git a/texttospeech/apiv1/text_to_speech_client_example_test.go b/texttospeech/apiv1/text_to_speech_client_example_test.go
index 7a2d4f8..cf07511 100644
--- a/texttospeech/apiv1/text_to_speech_client_example_test.go
+++ b/texttospeech/apiv1/text_to_speech_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/texttospeech/apiv1"
+	texttospeech "cloud.google.com/go/texttospeech/apiv1"
 	texttospeechpb "google.golang.org/genproto/googleapis/cloud/texttospeech/v1"
 )
 
diff --git a/trace/apiv1/trace_client_example_test.go b/trace/apiv1/trace_client_example_test.go
index 5e0c94b..98b134c 100644
--- a/trace/apiv1/trace_client_example_test.go
+++ b/trace/apiv1/trace_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/trace/apiv1"
+	trace "cloud.google.com/go/trace/apiv1"
 	"google.golang.org/api/iterator"
 	cloudtracepb "google.golang.org/genproto/googleapis/devtools/cloudtrace/v1"
 )
diff --git a/trace/apiv2/trace_client_example_test.go b/trace/apiv2/trace_client_example_test.go
index ebd17fa..ae2413e 100644
--- a/trace/apiv2/trace_client_example_test.go
+++ b/trace/apiv2/trace_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/trace/apiv2"
+	trace "cloud.google.com/go/trace/apiv2"
 	cloudtracepb "google.golang.org/genproto/googleapis/devtools/cloudtrace/v2"
 )
 
diff --git a/videointelligence/apiv1/video_intelligence_client_example_test.go b/videointelligence/apiv1/video_intelligence_client_example_test.go
index d0fcd6a..9586594 100644
--- a/videointelligence/apiv1/video_intelligence_client_example_test.go
+++ b/videointelligence/apiv1/video_intelligence_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/videointelligence/apiv1"
+	videointelligence "cloud.google.com/go/videointelligence/apiv1"
 	videointelligencepb "google.golang.org/genproto/googleapis/cloud/videointelligence/v1"
 )
 
diff --git a/videointelligence/apiv1beta1/video_intelligence_client_example_test.go b/videointelligence/apiv1beta1/video_intelligence_client_example_test.go
index 52da320..6e4cd81 100644
--- a/videointelligence/apiv1beta1/video_intelligence_client_example_test.go
+++ b/videointelligence/apiv1beta1/video_intelligence_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/videointelligence/apiv1beta1"
+	videointelligence "cloud.google.com/go/videointelligence/apiv1beta1"
 	videointelligencepb "google.golang.org/genproto/googleapis/cloud/videointelligence/v1beta1"
 )
 
diff --git a/videointelligence/apiv1beta2/video_intelligence_client_example_test.go b/videointelligence/apiv1beta2/video_intelligence_client_example_test.go
index e5fcb3d..e4a18f0 100644
--- a/videointelligence/apiv1beta2/video_intelligence_client_example_test.go
+++ b/videointelligence/apiv1beta2/video_intelligence_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/videointelligence/apiv1beta2"
+	videointelligence "cloud.google.com/go/videointelligence/apiv1beta2"
 	videointelligencepb "google.golang.org/genproto/googleapis/cloud/videointelligence/v1beta2"
 )
 
diff --git a/vision/apiv1/image_annotator_client_example_test.go b/vision/apiv1/image_annotator_client_example_test.go
index 2f646b6..0f4ca10 100644
--- a/vision/apiv1/image_annotator_client_example_test.go
+++ b/vision/apiv1/image_annotator_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/vision/apiv1"
+	vision "cloud.google.com/go/vision/apiv1"
 	visionpb "google.golang.org/genproto/googleapis/cloud/vision/v1"
 )
 
diff --git a/vision/apiv1/product_search_client_example_test.go b/vision/apiv1/product_search_client_example_test.go
index 69eb756..116fd96 100644
--- a/vision/apiv1/product_search_client_example_test.go
+++ b/vision/apiv1/product_search_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/vision/apiv1"
+	vision "cloud.google.com/go/vision/apiv1"
 	"google.golang.org/api/iterator"
 	visionpb "google.golang.org/genproto/googleapis/cloud/vision/v1"
 )
diff --git a/vision/apiv1p1beta1/image_annotator_client_example_test.go b/vision/apiv1p1beta1/image_annotator_client_example_test.go
index db334f8..cc99d23 100644
--- a/vision/apiv1p1beta1/image_annotator_client_example_test.go
+++ b/vision/apiv1p1beta1/image_annotator_client_example_test.go
@@ -19,7 +19,7 @@
 import (
 	"context"
 
-	"cloud.google.com/go/vision/apiv1p1beta1"
+	vision "cloud.google.com/go/vision/apiv1p1beta1"
 	visionpb "google.golang.org/genproto/googleapis/cloud/vision/v1p1beta1"
 )