diff --git a/src/libs/Rime/Generated/Rime.AutoSDKHttpResponse.g.cs b/src/libs/Rime/Generated/Rime.AutoSDKHttpResponse.g.cs
index fda795b..06aba75 100644
--- a/src/libs/Rime/Generated/Rime.AutoSDKHttpResponse.g.cs
+++ b/src/libs/Rime/Generated/Rime.AutoSDKHttpResponse.g.cs
@@ -164,9 +164,9 @@ public static class AutoSDKConditionalRequests
         {
             send = send ?? throw new global::System.ArgumentNullException(nameof(send));
             requestOptions = CloneRequestOptions(requestOptions);
-            if (!string.IsNullOrWhiteSpace(entityTag))
+            if (entityTag is { } nonEmptyEntityTag && !string.IsNullOrWhiteSpace(nonEmptyEntityTag))
             {
-                requestOptions.Headers["If-None-Match"] = entityTag!;
+                requestOptions.Headers["If-None-Match"] = nonEmptyEntityTag;
             }
 
             try
diff --git a/src/libs/Rime/Generated/Rime.TextToSpeechClient.CreateTts.g.cs b/src/libs/Rime/Generated/Rime.TextToSpeechClient.CreateTts.g.cs
index 59d7981..f6c750a 100644
--- a/src/libs/Rime/Generated/Rime.TextToSpeechClient.CreateTts.g.cs
+++ b/src/libs/Rime/Generated/Rime.TextToSpeechClient.CreateTts.g.cs
@@ -192,7 +192,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: null,
                                 clientOptions: Options,
@@ -226,7 +226,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: __exception,
                                 clientOptions: Options,
@@ -267,7 +267,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -315,7 +315,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -337,7 +337,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -633,7 +633,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: null,
                                 clientOptions: Options,
@@ -667,7 +667,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: __exception,
                                 clientOptions: Options,
@@ -708,7 +708,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -756,7 +756,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -778,7 +778,7 @@ partial void ProcessCreateTtsResponseContent(
                                 pathTemplate: "\"/v1/rime-tts\"",
                                 httpMethod: "POST",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
diff --git a/src/libs/Rime/Generated/Rime.VoicesClient.ListVoiceDetails.g.cs b/src/libs/Rime/Generated/Rime.VoicesClient.ListVoiceDetails.g.cs
index e1531e9..1dba4fc 100644
--- a/src/libs/Rime/Generated/Rime.VoicesClient.ListVoiceDetails.g.cs
+++ b/src/libs/Rime/Generated/Rime.VoicesClient.ListVoiceDetails.g.cs
@@ -164,7 +164,7 @@ partial void ProcessListVoiceDetailsResponseContent(
                                 pathTemplate: "\"/data/voices/voice_details.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: null,
                                 clientOptions: Options,
@@ -198,7 +198,7 @@ partial void ProcessListVoiceDetailsResponseContent(
                                 pathTemplate: "\"/data/voices/voice_details.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: __exception,
                                 clientOptions: Options,
@@ -239,7 +239,7 @@ partial void ProcessListVoiceDetailsResponseContent(
                                 pathTemplate: "\"/data/voices/voice_details.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -287,7 +287,7 @@ partial void ProcessListVoiceDetailsResponseContent(
                                 pathTemplate: "\"/data/voices/voice_details.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -309,7 +309,7 @@ partial void ProcessListVoiceDetailsResponseContent(
                                 pathTemplate: "\"/data/voices/voice_details.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
diff --git a/src/libs/Rime/Generated/Rime.VoicesClient.ListVoices.g.cs b/src/libs/Rime/Generated/Rime.VoicesClient.ListVoices.g.cs
index 922b9f6..941254a 100644
--- a/src/libs/Rime/Generated/Rime.VoicesClient.ListVoices.g.cs
+++ b/src/libs/Rime/Generated/Rime.VoicesClient.ListVoices.g.cs
@@ -162,7 +162,7 @@ partial void ProcessListVoicesResponseContent(
                                 pathTemplate: "\"/data/voices/all-v2.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: null,
                                 clientOptions: Options,
@@ -196,7 +196,7 @@ partial void ProcessListVoicesResponseContent(
                                 pathTemplate: "\"/data/voices/all-v2.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: null,
                                 exception: __exception,
                                 clientOptions: Options,
@@ -237,7 +237,7 @@ partial void ProcessListVoicesResponseContent(
                                 pathTemplate: "\"/data/voices/all-v2.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -285,7 +285,7 @@ partial void ProcessListVoicesResponseContent(
                                 pathTemplate: "\"/data/voices/all-v2.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,
@@ -307,7 +307,7 @@ partial void ProcessListVoicesResponseContent(
                                 pathTemplate: "\"/data/voices/all-v2.json\"",
                                 httpMethod: "GET",
                                 baseUri: BaseUri,
-                                request: __httpRequest!,
+                                request: __httpRequest ?? throw new global::System.InvalidOperationException("The HTTP request was not created before invoking a request hook."),
                                 response: __response,
                                 exception: null,
                                 clientOptions: Options,