feat: Update data types from discovery doc.

Google.GenAI/types/Blob.cs

@@ -23,22 +23,23 @@
 
 namespace Google.GenAI.Types {
   /// <summary>
-  /// Content blob.
+  /// A content blob. A Blob contains data of a specific media type. It is used to represent images,
+  /// audio, and video.
   /// </summary>
 
   public record Blob {
     /// <summary>
-    /// Raw bytes.
+    /// The raw bytes of the data.
     /// </summary>
     [JsonPropertyName("data")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public byte[] ? Data { get; set; }
 
     /// <summary>
-    /// Optional. Display name of the blob. Used to provide a label or filename to distinguish
-    /// blobs. This field is only returned in PromptMessage for prompt management. It is currently
-    /// used in the Gemini GenerateContent calls only when server side tools (code_execution,
-    /// google_search, and url_context) are enabled. This field is not supported in Gemini API.
+    /// Optional. The display name of the blob. Used to provide a label or filename to distinguish
+    /// blobs. This field is only returned in `PromptMessage` for prompt management. It is used in
+    /// the Gemini calls only when server-side tools (`code_execution`, `google_search`, and
+    /// `url_context`) are enabled. This field is not supported in Gemini API.
     /// </summary>
     [JsonPropertyName("displayName")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]

Google.GenAI/types/Candidate.cs

@@ -76,27 +76,31 @@ public FinishReason
           }
 
     /// <summary>
-    /// Output only. Average log probability score of the candidate.
+    /// Output only. Grounding metadata for the candidate. This field is populated for
+    /// `GenerateContent` calls.
     /// </summary>
-    [JsonPropertyName("avgLogprobs")]
+    [JsonPropertyName("groundingMetadata")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public double
-        ? AvgLogprobs {
+    public GroundingMetadata
+        ? GroundingMetadata {
             get; set;
           }
 
     /// <summary>
-    /// Output only. Metadata specifies sources used to ground generated content.
+    /// Output only. The average log probability of the tokens in this candidate. This is a
+    /// length-normalized score that can be used to compare the quality of candidates of different
+    /// lengths. A higher average log probability suggests a more confident and coherent response.
     /// </summary>
-    [JsonPropertyName("groundingMetadata")]
+    [JsonPropertyName("avgLogprobs")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public GroundingMetadata
-        ? GroundingMetadata {
+    public double
+        ? AvgLogprobs {
             get; set;
           }
 
     /// <summary>
-    /// Output only. Index of the candidate.
+    /// Output only. The 0-based index of this candidate in the list of generated responses. This is
+    /// useful for distinguishing between multiple candidates when `candidate_count` > 1.
     /// </summary>
     [JsonPropertyName("index")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -106,7 +110,9 @@ public int
           }
 
     /// <summary>
-    /// Output only. Log-likelihood scores for the response tokens and top tokens
+    /// Output only. The detailed log probability information for the tokens in this candidate. This
+    /// is useful for debugging, understanding model uncertainty, and identifying potential
+    /// "hallucinations".
     /// </summary>
     [JsonPropertyName("logprobsResult")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -116,7 +122,7 @@ public LogprobsResult
           }
 
     /// <summary>
-    /// Output only. List of ratings for the safety of a response candidate. There is at most one
+    /// Output only. A list of ratings for the safety of a response candidate. There is at most one
     /// rating per category.
     /// </summary>
     [JsonPropertyName("safetyRatings")]
@@ -127,7 +133,8 @@ public List<SafetyRating>
           }
 
     /// <summary>
-    /// Output only. Metadata related to url context retrieval tool.
+    /// Output only. Metadata returned when the model uses the `url_context` tool to get information
+    /// from a user-provided URL.
     /// </summary>
     [JsonPropertyName("urlContextMetadata")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]

Google.GenAI/types/Citation.cs

@@ -23,19 +23,19 @@
 
 namespace Google.GenAI.Types {
   /// <summary>
-  /// Source attributions for content. This data type is not supported in Gemini API.
+  /// A citation for a piece of generatedcontent. This data type is not supported in Gemini API.
   /// </summary>
 
   public record Citation {
     /// <summary>
-    /// Output only. End index into the content.
+    /// Output only. The end index of the citation in the content.
     /// </summary>
     [JsonPropertyName("endIndex")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public int ? EndIndex { get; set; }
 
     /// <summary>
-    /// Output only. License of the attribution.
+    /// Output only. The license of the source of the citation.
     /// </summary>
     [JsonPropertyName("license")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -45,7 +45,7 @@ public string
           }
 
     /// <summary>
-    /// Output only. Publication date of the attribution.
+    /// Output only. The publication date of the source of the citation.
     /// </summary>
     [JsonPropertyName("publicationDate")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -55,7 +55,7 @@ public GoogleTypeDate
           }
 
     /// <summary>
-    /// Output only. Start index into the content.
+    /// Output only. The start index of the citation in the content.
     /// </summary>
     [JsonPropertyName("startIndex")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -65,7 +65,7 @@ public int
           }
 
     /// <summary>
-    /// Output only. Title of the attribution.
+    /// Output only. The title of the source of the citation.
     /// </summary>
     [JsonPropertyName("title")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -75,7 +75,7 @@ public string
           }
 
     /// <summary>
-    /// Output only. Url reference of the attribution.
+    /// Output only. The URI of the source of the citation.
     /// </summary>
     [JsonPropertyName("uri")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]

Google.GenAI/types/Content.cs

@@ -36,8 +36,8 @@ public record Content {
     public List<Part> ? Parts { get; set; }
 
     /// <summary>
-    /// Optional. The producer of the content. Must be either 'user' or 'model'. Useful to set for
-    /// multi-turn conversations, otherwise can be left blank or unset.
+    /// Optional. The producer of the content. Must be either 'user' or 'model'. If not set, the
+    /// service will default to 'user'.
     /// </summary>
     [JsonPropertyName("role")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]

Google.GenAI/types/EnterpriseWebSearch.cs

@@ -29,21 +29,21 @@ namespace Google.GenAI.Types {
 
   public record EnterpriseWebSearch {
     /// <summary>
-    /// Optional. List of domains to be excluded from the search results. The default limit is 2000
-    /// domains.
+    /// Optional. Sites with confidence level chosen &amp; above this value will be blocked from the
+    /// search results.
     /// </summary>
-    [JsonPropertyName("excludeDomains")]
+    [JsonPropertyName("blockingConfidence")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public List<string> ? ExcludeDomains { get; set; }
+    public PhishBlockThreshold ? BlockingConfidence { get; set; }
 
     /// <summary>
-    /// Optional. Sites with confidence level chosen &amp; above this value will be blocked from the
-    /// search results.
+    /// Optional. List of domains to be excluded from the search results. The default limit is 2000
+    /// domains.
     /// </summary>
-    [JsonPropertyName("blockingConfidence")]
+    [JsonPropertyName("excludeDomains")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public PhishBlockThreshold
-        ? BlockingConfidence {
+    public List<string>
+        ? ExcludeDomains {
             get; set;
           }
 

Google.GenAI/types/FileData.cs

@@ -23,23 +23,23 @@
 
 namespace Google.GenAI.Types {
   /// <summary>
-  /// URI based data.
+  /// URI-based data. A FileData message contains a URI pointing to data of a specific media type.
+  /// It is used to represent images, audio, and video stored in Google Cloud Storage.
   /// </summary>
 
   public record FileData {
     /// <summary>
-    /// Optional. Display name of the file data. Used to provide a label or filename to distinguish
-    /// file datas. This field is only returned in PromptMessage for prompt management. It is
-    /// currently used in the Gemini GenerateContent calls only when server side tools
-    /// (code_execution, google_search, and url_context) are enabled. This field is not supported in
-    /// Gemini API.
+    /// Optional. The display name of the file. Used to provide a label or filename to distinguish
+    /// files. This field is only returned in `PromptMessage` for prompt management. It is used in
+    /// the Gemini calls only when server side tools (`code_execution`, `google_search`, and
+    /// `url_context`) are enabled. This field is not supported in Gemini API.
     /// </summary>
     [JsonPropertyName("displayName")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string ? DisplayName { get; set; }
 
     /// <summary>
-    /// URI.
+    /// The URI of the file in Google Cloud Storage.
     /// </summary>
     [JsonPropertyName("fileUri")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]

Google.GenAI/types/FileSearch.cs

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Google.GenAI.Serialization;
+
+namespace Google.GenAI.Types {
+  /// <summary>
+  /// The FileSearch tool that retrieves knowledge from Semantic Retrieval corpora. Files are
+  /// imported to Semantic Retrieval corpora using the ImportFile API. This data type is not
+  /// supported in Vertex AI.
+  /// </summary>
+
+  public record FileSearch {
+    /// <summary>
+    /// The names of the file_search_stores to retrieve from. Example:
+    /// `fileSearchStores/my-file-search-store-123`
+    /// </summary>
+    [JsonPropertyName("fileSearchStoreNames")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public List<string> ? FileSearchStoreNames { get; set; }
+
+    /// <summary>
+    /// Optional. Metadata filter to apply to the semantic retrieval documents and chunks.
+    /// </summary>
+    [JsonPropertyName("metadataFilter")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public string
+        ? MetadataFilter {
+            get; set;
+          }
+
+    /// <summary>
+    /// Optional. The number of semantic retrieval chunks to retrieve.
+    /// </summary>
+    [JsonPropertyName("topK")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public int
+        ? TopK {
+            get; set;
+          }
+
+    /// <summary>
+    /// Deserializes a JSON string to a FileSearch object.
+    /// </summary>
+    /// <param name="jsonString">The JSON string to deserialize.</param>
+    /// <param name="options">Optional JsonSerializerOptions.</param>
+    /// <returns>The deserialized FileSearch object, or null if deserialization fails.</returns>
+    public static FileSearch ? FromJson(string jsonString, JsonSerializerOptions? options = null) {
+      try {
+        return JsonSerializer.Deserialize<FileSearch>(jsonString, options);
+      } catch (JsonException e) {
+        Console.Error.WriteLine($"Error deserializing JSON: {e.ToString()}");
+        return null;
+      }
+    }
+  }
+}