Rebase and update golden files

generator/cmd/openapi/testdata/rust/golden/model.rs

@@ -36,7 +36,7 @@ pub struct Location {
     /// Cross-service attributes for the location. For example
     /// 
     ///     {"cloud.googleapis.com/region": "us-east1"}
-    pub labels: ,
+    pub labels: Option<std::collections::HashMap<String,String>>,
 
     /// Service-specific metadata. For example the available capacity at the given
     /// location.
@@ -94,7 +94,7 @@ pub struct Secret {
     /// regular expression: `[\p{Ll}\p{Lo}\p{N}_-]{0,63}`
     /// 
     /// No more than 64 labels can be assigned to a given resource.
-    pub labels: ,
+    pub labels: Option<std::collections::HashMap<String,String>>,
 
     /// Optional. A list of up to 10 Pub/Sub topics to which messages are published when
     /// control plane operations are called on the secret or its versions.
@@ -125,7 +125,7 @@ pub struct Secret {
     /// Version-Alias pairs will be viewable via GetSecret and modifiable via
     /// UpdateSecret. Access by alias is only be supported on
     /// GetSecretVersion and AccessSecretVersion.
-    pub version_aliases: ,
+    pub version_aliases: Option<std::collections::HashMap<String,i64>>,
 
     /// Optional. Custom metadata about the secret.
     /// 
@@ -139,7 +139,7 @@ pub struct Secret {
     /// alphanumerics in between these symbols.
     /// 
     /// The total size of annotation keys and values must be less than 16KiB.
-    pub annotations: ,
+    pub annotations: Option<std::collections::HashMap<String,String>>,
 
     /// Optional. Secret Version TTL after destruction request
     ///