diff --git a/services/compute/mgmt/2016-03-30/compute/availabilitysets.go b/services/compute/mgmt/2016-03-30/compute/availabilitysets.go
index 39084c30026d..031e9a021fef 100644
--- a/services/compute/mgmt/2016-03-30/compute/availabilitysets.go
+++ b/services/compute/mgmt/2016-03-30/compute/availabilitysets.go
@@ -466,7 +466,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -478,7 +480,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -500,7 +502,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -509,6 +511,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -560,7 +565,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -571,6 +576,6 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
diff --git a/services/compute/mgmt/2016-03-30/compute/computeapi/interfaces.go b/services/compute/mgmt/2016-03-30/compute/computeapi/interfaces.go
index e7c54a8d1607..f5203bf82a83 100644
--- a/services/compute/mgmt/2016-03-30/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2016-03-30/compute/computeapi/interfaces.go
@@ -29,7 +29,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 }
 
 var _ AvailabilitySetsClientAPI = (*compute.AvailabilitySetsClient)(nil)
diff --git a/services/compute/mgmt/2017-03-30/compute/availabilitysets.go b/services/compute/mgmt/2017-03-30/compute/availabilitysets.go
index 573ffd10687b..f5a559caa404 100644
--- a/services/compute/mgmt/2017-03-30/compute/availabilitysets.go
+++ b/services/compute/mgmt/2017-03-30/compute/availabilitysets.go
@@ -466,7 +466,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -478,7 +480,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -500,7 +502,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -509,6 +511,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -560,7 +565,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -571,6 +576,6 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
diff --git a/services/compute/mgmt/2017-03-30/compute/computeapi/interfaces.go b/services/compute/mgmt/2017-03-30/compute/computeapi/interfaces.go
index 74509248f485..ffd16dcf7368 100644
--- a/services/compute/mgmt/2017-03-30/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2017-03-30/compute/computeapi/interfaces.go
@@ -29,7 +29,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 }
 
 var _ AvailabilitySetsClientAPI = (*compute.AvailabilitySetsClient)(nil)
diff --git a/services/compute/mgmt/2017-12-01/compute/availabilitysets.go b/services/compute/mgmt/2017-12-01/compute/availabilitysets.go
index d46ad7a984a6..e849b7225857 100644
--- a/services/compute/mgmt/2017-12-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2017-12-01/compute/availabilitysets.go
@@ -466,7 +466,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -478,7 +480,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -500,7 +502,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -509,6 +511,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -560,7 +565,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -571,7 +576,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2017-12-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2017-12-01/compute/computeapi/interfaces.go
index 1c71e948ee6a..7f26ac6fec7d 100644
--- a/services/compute/mgmt/2017-12-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2017-12-01/compute/computeapi/interfaces.go
@@ -36,7 +36,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }
 
diff --git a/services/compute/mgmt/2018-04-01/compute/availabilitysets.go b/services/compute/mgmt/2018-04-01/compute/availabilitysets.go
index 59e0e4e9e637..a5c179497f06 100644
--- a/services/compute/mgmt/2018-04-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2018-04-01/compute/availabilitysets.go
@@ -465,7 +465,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -477,7 +479,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -499,7 +501,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -508,6 +510,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -559,7 +564,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -570,7 +575,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2018-04-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2018-04-01/compute/computeapi/interfaces.go
index cd7eec093716..22f6cd41b575 100644
--- a/services/compute/mgmt/2018-04-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2018-04-01/compute/computeapi/interfaces.go
@@ -37,7 +37,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }
 
diff --git a/services/compute/mgmt/2018-06-01/compute/availabilitysets.go b/services/compute/mgmt/2018-06-01/compute/availabilitysets.go
index c9acfdd39b65..e5ba6c3c6832 100644
--- a/services/compute/mgmt/2018-06-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2018-06-01/compute/availabilitysets.go
@@ -465,7 +465,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -477,7 +479,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -499,7 +501,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -508,6 +510,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -559,7 +564,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -570,7 +575,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2018-06-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2018-06-01/compute/computeapi/interfaces.go
index 2e9ac9575fd3..2e815c1740a8 100644
--- a/services/compute/mgmt/2018-06-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2018-06-01/compute/computeapi/interfaces.go
@@ -37,7 +37,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }
 
diff --git a/services/compute/mgmt/2018-10-01/compute/availabilitysets.go b/services/compute/mgmt/2018-10-01/compute/availabilitysets.go
index 008185e15961..d8e9208e34d2 100644
--- a/services/compute/mgmt/2018-10-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2018-10-01/compute/availabilitysets.go
@@ -465,7 +465,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -477,7 +479,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -499,7 +501,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -508,6 +510,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -559,7 +564,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -570,7 +575,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2018-10-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2018-10-01/compute/computeapi/interfaces.go
index 3ddbabda869a..790c917d8016 100644
--- a/services/compute/mgmt/2018-10-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2018-10-01/compute/computeapi/interfaces.go
@@ -37,7 +37,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }
 
diff --git a/services/compute/mgmt/2019-03-01/compute/availabilitysets.go b/services/compute/mgmt/2019-03-01/compute/availabilitysets.go
index 8a6bbaa4a195..853abfc1c95c 100644
--- a/services/compute/mgmt/2019-03-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2019-03-01/compute/availabilitysets.go
@@ -465,7 +465,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -477,7 +479,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -499,7 +501,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -508,6 +510,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -559,7 +564,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -570,7 +575,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2019-03-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2019-03-01/compute/computeapi/interfaces.go
index 9dd226f0493a..b9cb016a868d 100644
--- a/services/compute/mgmt/2019-03-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2019-03-01/compute/computeapi/interfaces.go
@@ -37,7 +37,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }
 
diff --git a/services/compute/mgmt/2019-07-01/compute/availabilitysets.go b/services/compute/mgmt/2019-07-01/compute/availabilitysets.go
index 8a6bbaa4a195..853abfc1c95c 100644
--- a/services/compute/mgmt/2019-07-01/compute/availabilitysets.go
+++ b/services/compute/mgmt/2019-07-01/compute/availabilitysets.go
@@ -465,7 +465,9 @@ func (client AvailabilitySetsClient) ListAvailableSizesResponder(resp *http.Resp
 }
 
 // ListBySubscription lists all availability sets in a subscription.
-func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (result AvailabilitySetListResultPage, err error) {
+// Parameters:
+// expand - the expand expression to apply to the operation.
+func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context, expand string) (result AvailabilitySetListResultPage, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -477,7 +479,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 		}()
 	}
 	result.fn = client.listBySubscriptionNextResults
-	req, err := client.ListBySubscriptionPreparer(ctx)
+	req, err := client.ListBySubscriptionPreparer(ctx, expand)
 	if err != nil {
 		err = autorest.NewErrorWithError(err, "compute.AvailabilitySetsClient", "ListBySubscription", nil, "Failure preparing request")
 		return
@@ -499,7 +501,7 @@ func (client AvailabilitySetsClient) ListBySubscription(ctx context.Context) (re
 }
 
 // ListBySubscriptionPreparer prepares the ListBySubscription request.
-func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context) (*http.Request, error) {
+func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Context, expand string) (*http.Request, error) {
 	pathParameters := map[string]interface{}{
 		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
 	}
@@ -508,6 +510,9 @@ func (client AvailabilitySetsClient) ListBySubscriptionPreparer(ctx context.Cont
 	queryParameters := map[string]interface{}{
 		"api-version": APIVersion,
 	}
+	if len(expand) > 0 {
+		queryParameters["$expand"] = autorest.Encode("query", expand)
+	}
 
 	preparer := autorest.CreatePreparer(
 		autorest.AsGet(),
@@ -559,7 +564,7 @@ func (client AvailabilitySetsClient) listBySubscriptionNextResults(ctx context.C
 }
 
 // ListBySubscriptionComplete enumerates all values, automatically crossing page boundaries as required.
-func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context) (result AvailabilitySetListResultIterator, err error) {
+func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Context, expand string) (result AvailabilitySetListResultIterator, err error) {
 	if tracing.IsEnabled() {
 		ctx = tracing.StartSpan(ctx, fqdn+"/AvailabilitySetsClient.ListBySubscription")
 		defer func() {
@@ -570,7 +575,7 @@ func (client AvailabilitySetsClient) ListBySubscriptionComplete(ctx context.Cont
 			tracing.EndSpan(ctx, sc, err)
 		}()
 	}
-	result.page, err = client.ListBySubscription(ctx)
+	result.page, err = client.ListBySubscription(ctx, expand)
 	return
 }
 
diff --git a/services/compute/mgmt/2019-07-01/compute/computeapi/interfaces.go b/services/compute/mgmt/2019-07-01/compute/computeapi/interfaces.go
index f4658b1dfc43..1a3fc7f1d25a 100644
--- a/services/compute/mgmt/2019-07-01/compute/computeapi/interfaces.go
+++ b/services/compute/mgmt/2019-07-01/compute/computeapi/interfaces.go
@@ -37,7 +37,7 @@ type AvailabilitySetsClientAPI interface {
 	Get(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.AvailabilitySet, err error)
 	List(ctx context.Context, resourceGroupName string) (result compute.AvailabilitySetListResultPage, err error)
 	ListAvailableSizes(ctx context.Context, resourceGroupName string, availabilitySetName string) (result compute.VirtualMachineSizeListResult, err error)
-	ListBySubscription(ctx context.Context) (result compute.AvailabilitySetListResultPage, err error)
+	ListBySubscription(ctx context.Context, expand string) (result compute.AvailabilitySetListResultPage, err error)
 	Update(ctx context.Context, resourceGroupName string, availabilitySetName string, parameters compute.AvailabilitySetUpdate) (result compute.AvailabilitySet, err error)
 }