chore: Release library Google.Cloud.AIPlatform.V1 version 3.59.0

### New features

- Add streaming function call argument API changes

### Documentation improvements

- A comment for field `name` in message `.google.cloud.aiplatform.v1.FunctionCall` is changed
- A comment for field `args` in message `.google.cloud.aiplatform.v1.FunctionCall` is changed

Librarian-Release-Library: Google.Cloud.AIPlatform.V1
Librarian-Release-Version: 3.59.0
Librarian-Release-ID: release-20251212T000340Z

Author: google-cloud-sdk-librarian-dotnet-robot

apis/Google.Cloud.AIPlatform.V1/Google.Cloud.AIPlatform.V1/Google.Cloud.AIPlatform.V1.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>3.58.0</Version>
+    <Version>3.59.0</Version>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Description>Recommended Google client library to access the Vertex AI API (v1), which allows you to train high-quality custom machine learning models with minimal machine learning expertise and effort.</Description>

apis/Google.Cloud.AIPlatform.V1/docs/history.md

@@ -1,5 +1,16 @@
 # Version history
 
+## Version 3.59.0, released 2025-12-12
+
+### New features
+
+- Add streaming function call argument API changes
+
+### Documentation improvements
+
+- A comment for field `name` in message `.google.cloud.aiplatform.v1.FunctionCall` is changed
+- A comment for field `args` in message `.google.cloud.aiplatform.v1.FunctionCall` is changed
+
 ## Version 3.58.0, released 2025-12-09
 
 ### Bug fixes

generator-input/apis.json

@@ -436,7 +436,7 @@
     },
     {
       "id": "Google.Cloud.AIPlatform.V1",
-      "version": "3.58.0",
+      "version": "3.59.0",
       "type": "grpc",
       "productName": "Vertex AI",
       "productUrl": "https://cloud.google.com/vertex-ai/docs",

generator-input/pipeline-state.json

@@ -288,12 +288,12 @@
         },
         {
             "id": "Google.Cloud.AIPlatform.V1",
-            "currentVersion": "3.58.0",
+            "currentVersion": "3.59.0",
             "generationAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
             "releaseAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
-            "releaseTimestamp": "2025-12-09T10:57:07.807961260Z",
+            "releaseTimestamp": "2025-12-12T00:08:36.601780401Z",
             "lastGeneratedCommit": "effe5c4fa816021e724ca856d5640f2e55b14a8b",
-            "lastReleasedCommit": "a448b7d9f0778ee4e14d0be52269facb41989c4b",
+            "lastReleasedCommit": "effe5c4fa816021e724ca856d5640f2e55b14a8b",
             "apiPaths": [
                 "google/cloud/aiplatform/v1"
             ],