Add comments where casts may fail to compile in future

v2/api/authorization/customizations/role_assignment_extensions.go

@@ -28,6 +28,9 @@ func (extension *RoleAssignmentExtension) Import(
 		return extensions.ImportResult{}, err
 	}
 
+	// If this cast doesn't compile, update the `api` import to reference the now latest
+	// stable version of the authorization group (this will happen when we import a new
+	// API version in the generator.)
 	if assignment, ok := rsrc.(*api.RoleAssignment); ok {
 		// Check to see whether this role assignment is inherited or not
 		// (we can tell by looking at the scope of the assignment)

v2/api/authorization/customizations/role_definition_extensions.go

@@ -28,6 +28,9 @@ func (extension *RoleDefinitionExtension) Import(
 		return extensions.ImportResult{}, err
 	}
 
+	// If this cast doesn't compile, update the `api` import to reference the now latest
+	// stable version of the authorization group (this will happen when we import a new
+	// API version in the generator.)
 	if definition, ok := rsrc.(*api.RoleDefinition); ok {
 		// If this role definition is built in, we don't need to export it
 		if definition.Spec.Type != nil {

v2/api/dbforpostgresql/customizations/flexible_servers_configuration_extensions.go

@@ -27,6 +27,9 @@ func (extension *FlexibleServersConfigurationExtension) Import(
 		return extensions.ImportResult{}, err
 	}
 
+	// If this cast doesn't compile, update the `api` import to reference the now latest
+	// stable version of the authorization group (this will happen when we import a new
+	// API version in the generator.)
 	if config, ok := rsrc.(*api.FlexibleServersConfiguration); ok {
 		// Skip system defaults
 		if config.Spec.Source != nil && *config.Spec.Source == "system-default" {

v2/api/dbforpostgresql/customizations/flexible_servers_database_extensions.go

@@ -58,6 +58,9 @@ func (extension *FlexibleServersDatabaseExtension) Import(
 	owner *genruntime.ResourceReference,
 	next extensions.ImporterFunc,
 ) (extensions.ImportResult, error) {
+	// If this cast doesn't compile, update the `api` import to reference the now latest
+	// stable version of the authorization group (this will happen when we import a new
+	// API version in the generator.)
 	if server, ok := rsrc.(*api.FlexibleServersDatabase); ok {
 		if server.Spec.AzureName == "azure_maintenance" {
 			return extensions.ImportSkipped("azure_maintenance database is not accessible by users"), nil