diff --git a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/pkg/client/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/pkg/client/clientset/versioned/fake/clientset_generated.go
index 8b5c9e3365a..cfddc15ac96 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/pkg/client/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/examples/client-go/pkg/client/clientset/versioned/fake/clientset_generated.go
@@ -84,6 +84,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/fake/clientset_generated.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/fake/clientset_generated.go
index 1b38b880bc8..76295e745ea 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/fake/clientset_generated.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/fake/clientset_generated.go
@@ -86,6 +86,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/client-go/kubernetes/fake/clientset_generated.go b/staging/src/k8s.io/client-go/kubernetes/fake/clientset_generated.go
index c8826514744..614770f1852 100644
--- a/staging/src/k8s.io/client-go/kubernetes/fake/clientset_generated.go
+++ b/staging/src/k8s.io/client-go/kubernetes/fake/clientset_generated.go
@@ -192,6 +192,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/client-go/kubernetes_test/fake_client_test.go b/staging/src/k8s.io/client-go/kubernetes_test/fake_client_test.go
index b1abc20423f..95ee276f3ff 100644
--- a/staging/src/k8s.io/client-go/kubernetes_test/fake_client_test.go
+++ b/staging/src/k8s.io/client-go/kubernetes_test/fake_client_test.go
@@ -26,8 +26,16 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/client-go/kubernetes/fake"
 	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/util/watchlist"
 )
 
+func TestDoesClientSupportWatchListSemantics(t *testing.T) {
+	target := fake.NewClientset()
+	if !watchlist.DoesClientNotSupportWatchListSemantics(target) {
+		t.Fatalf("NewSimpleClientset should NOT support WatchList semantics")
+	}
+}
+
 // This test proves that the kube fake client does not return GVKs.  This is consistent with actual client (see tests below)
 // and should not be changed unless the decoding behavior and somehow literal creation (`&corev1.ConfigMap{}`) behavior change.
 func Test_ConfigMapFakeClient(t *testing.T) {
diff --git a/staging/src/k8s.io/code-generator/cmd/client-gen/generators/fake/generator_fake_for_clientset.go b/staging/src/k8s.io/code-generator/cmd/client-gen/generators/fake/generator_fake_for_clientset.go
index c0e6769b5d3..c5df71d666e 100644
--- a/staging/src/k8s.io/code-generator/cmd/client-gen/generators/fake/generator_fake_for_clientset.go
+++ b/staging/src/k8s.io/code-generator/cmd/client-gen/generators/fake/generator_fake_for_clientset.go
@@ -210,6 +210,17 @@ func (c *Clientset) Discovery() discovery.DiscoveryInterface {
 func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
+
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
 `
 
 var checkImpl = `
diff --git a/staging/src/k8s.io/code-generator/examples/HyphenGroup/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/code-generator/examples/HyphenGroup/clientset/versioned/fake/clientset_generated.go
index aec905f237f..e7219ba44e2 100644
--- a/staging/src/k8s.io/code-generator/examples/HyphenGroup/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/code-generator/examples/HyphenGroup/clientset/versioned/fake/clientset_generated.go
@@ -84,6 +84,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/code-generator/examples/MixedCase/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/code-generator/examples/MixedCase/clientset/versioned/fake/clientset_generated.go
index 99d50c917f6..7f3eae52a79 100644
--- a/staging/src/k8s.io/code-generator/examples/MixedCase/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/code-generator/examples/MixedCase/clientset/versioned/fake/clientset_generated.go
@@ -84,6 +84,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/clientset_generated.go
index bb97784ccd9..0ac684823a8 100644
--- a/staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/code-generator/examples/apiserver/clientset/versioned/fake/clientset_generated.go
@@ -89,6 +89,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 var (
 	_ clientset.Interface = &Clientset{}
 	_ testing.FakeClient  = &Clientset{}
diff --git a/staging/src/k8s.io/code-generator/examples/crd/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/code-generator/examples/crd/clientset/versioned/fake/clientset_generated.go
index 1c1a3cae61b..982ffd605cc 100644
--- a/staging/src/k8s.io/code-generator/examples/crd/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/code-generator/examples/crd/clientset/versioned/fake/clientset_generated.go
@@ -90,6 +90,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/clientset_generated.go
index 44518b4ccaf..14c4a2df62a 100644
--- a/staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/code-generator/examples/single/clientset/versioned/fake/clientset_generated.go
@@ -84,6 +84,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake/clientset_generated.go b/staging/src/k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake/clientset_generated.go
index 5324fb0b9af..534d62d1195 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake/clientset_generated.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake/clientset_generated.go
@@ -85,6 +85,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 var (
 	_ clientset.Interface = &Clientset{}
 	_ testing.FakeClient  = &Clientset{}
diff --git a/staging/src/k8s.io/metrics/pkg/client/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/metrics/pkg/client/clientset/versioned/fake/clientset_generated.go
index 261cbf71dff..be4bb94e56b 100644
--- a/staging/src/k8s.io/metrics/pkg/client/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/metrics/pkg/client/clientset/versioned/fake/clientset_generated.go
@@ -85,6 +85,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 var (
 	_ clientset.Interface = &Clientset{}
 	_ testing.FakeClient  = &Clientset{}
diff --git a/staging/src/k8s.io/sample-apiserver/pkg/generated/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/sample-apiserver/pkg/generated/clientset/versioned/fake/clientset_generated.go
index dcf94744d63..a2a79308533 100644
--- a/staging/src/k8s.io/sample-apiserver/pkg/generated/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/sample-apiserver/pkg/generated/clientset/versioned/fake/clientset_generated.go
@@ -86,6 +86,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 // NewClientset returns a clientset that will respond with the provided objects.
 // It's backed by a very simple object tracker that processes creates, updates and deletions as-is,
 // without applying any validations and/or defaults. It shouldn't be considered a replacement
diff --git a/staging/src/k8s.io/sample-controller/pkg/generated/clientset/versioned/fake/clientset_generated.go b/staging/src/k8s.io/sample-controller/pkg/generated/clientset/versioned/fake/clientset_generated.go
index cfaec938530..4fe43173e3e 100644
--- a/staging/src/k8s.io/sample-controller/pkg/generated/clientset/versioned/fake/clientset_generated.go
+++ b/staging/src/k8s.io/sample-controller/pkg/generated/clientset/versioned/fake/clientset_generated.go
@@ -83,6 +83,17 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
+// IsWatchListSemanticsSupported informs the reflector that this client
+// doesn't support WatchList semantics.
+//
+// This is a synthetic method whose sole purpose is to satisfy the optional
+// interface check performed by the reflector.
+// Returning true signals that WatchList can NOT be used.
+// No additional logic is implemented here.
+func (c *Clientset) IsWatchListSemanticsUnSupported() bool {
+	return true
+}
+
 var (
 	_ clientset.Interface = &Clientset{}
 	_ testing.FakeClient  = &Clientset{}