[FirebaseAI] Fix minor issues with reference docs

firebaseai/src/Candidate.cs

@@ -83,8 +83,11 @@ public readonly struct Candidate {
   /// <summary>
   /// The safety rating of the response content.
   /// </summary>
-  public IEnumerable<SafetyRating> SafetyRatings =>
-      _safetyRatings ?? new ReadOnlyCollection<SafetyRating>(new List<SafetyRating>());
+  public IEnumerable<SafetyRating> SafetyRatings {
+    get {
+      return _safetyRatings ?? new ReadOnlyCollection<SafetyRating>(new List<SafetyRating>());
+    }
+  }
 
   /// <summary>
   /// The reason the model stopped generating content, if it exists;

firebaseai/src/Chat.cs

@@ -36,7 +36,11 @@ public class Chat {
   /// The previous content from the chat that has been successfully sent and received from the
   /// model. This will be provided to the model for each message sent as context for the discussion.
   /// </summary>
-  public IEnumerable<ModelContent> History => new ReadOnlyCollection<ModelContent>(chatHistory);
+  public IEnumerable<ModelContent> History {
+    get {
+     return new ReadOnlyCollection<ModelContent>(chatHistory);
+    }
+  }
 
   // Note: No public constructor, get one through GenerativeModel.StartChat
   private Chat(GenerativeModel model, IEnumerable<ModelContent> initialHistory) {

firebaseai/src/Citation.cs

@@ -30,8 +30,11 @@ public readonly struct CitationMetadata {
   /// <summary>
   /// A list of individual cited sources and the parts of the content to which they apply.
   /// </summary>
-  public IEnumerable<Citation> Citations =>
-      _citations ?? new ReadOnlyCollection<Citation>(new List<Citation>());
+  public IEnumerable<Citation> Citations {
+    get {
+      return _citations ?? new ReadOnlyCollection<Citation>(new List<Citation>());
+    }
+  }
 
   // Hidden constructor, users don't need to make this.
   private CitationMetadata(List<Citation> citations) {

firebaseai/src/CountTokensResponse.cs

@@ -41,8 +41,11 @@ public readonly struct CountTokensResponse {
   /// <summary>
   /// The breakdown, by modality, of how many tokens are consumed by the prompt.
   /// </summary>
-  public IEnumerable<ModalityTokenCount> PromptTokensDetails =>
-      _promptTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+  public IEnumerable<ModalityTokenCount> PromptTokensDetails {
+    get {
+      return _promptTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+    }
+  }
 
   // Hidden constructor, users don't need to make this
   private CountTokensResponse(int totalTokens,

firebaseai/src/FirebaseAI.cs

@@ -93,7 +93,11 @@ private FirebaseAI(FirebaseApp firebaseApp, Backend backend) {
   /// <summary>
   /// Returns a `FirebaseAI` instance with the default `FirebaseApp` and GoogleAI Backend.
   /// </summary>
-  public static FirebaseAI DefaultInstance => GetInstance();
+  public static FirebaseAI DefaultInstance {
+    get {
+      return GetInstance();
+    }
+  }
 
   /// <summary>
   /// Returns a `FirebaseAI` instance with the default `FirebaseApp` and the given Backend.

firebaseai/src/GenerateContentResponse.cs

@@ -31,8 +31,11 @@ public readonly struct GenerateContentResponse {
   /// <summary>
   /// A list of candidate response content, ordered from best to worst.
   /// </summary>
-  public IEnumerable<Candidate> Candidates =>
-      _candidates ?? new ReadOnlyCollection<Candidate>(new List<Candidate>());
+  public IEnumerable<Candidate> Candidates {
+    get {
+      return _candidates ?? new ReadOnlyCollection<Candidate>(new List<Candidate>());
+    }
+  }
 
   /// <summary>
   /// A value containing the safety ratings for the response, or,
@@ -141,8 +144,11 @@ public readonly struct PromptFeedback {
   /// <summary>
   /// The safety ratings of the prompt.
   /// </summary>
-  public IEnumerable<SafetyRating> SafetyRatings =>
-      _safetyRatings ?? new ReadOnlyCollection<SafetyRating>(new List<SafetyRating>());
+  public IEnumerable<SafetyRating> SafetyRatings {
+    get {
+      return _safetyRatings ?? new ReadOnlyCollection<SafetyRating>(new List<SafetyRating>());
+    }
+  }
 
   // Hidden constructor, users don't need to make this.
   private PromptFeedback(BlockReason? blockReason, string blockReasonMessage,
@@ -192,12 +198,18 @@ public readonly struct UsageMetadata {
   public int TotalTokenCount { get; }
 
   private readonly ReadOnlyCollection<ModalityTokenCount> _promptTokensDetails;
-  public IEnumerable<ModalityTokenCount> PromptTokensDetails =>
-      _promptTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+  public IEnumerable<ModalityTokenCount> PromptTokensDetails {
+    get {
+      return _promptTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+    }
+  }
 
   private readonly ReadOnlyCollection<ModalityTokenCount> _candidatesTokensDetails;
-  public IEnumerable<ModalityTokenCount> CandidatesTokensDetails =>
-      _candidatesTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+  public IEnumerable<ModalityTokenCount> CandidatesTokensDetails {
+    get {
+      return _candidatesTokensDetails ?? new ReadOnlyCollection<ModalityTokenCount>(new List<ModalityTokenCount>());
+    }
+  }
 
   // Hidden constructor, users don't need to make this.
   private UsageMetadata(int promptTC, int candidatesTC, int totalTC,

firebaseai/src/LiveSessionResponse.cs

@@ -183,9 +183,12 @@ internal static LiveSessionContent FromJson(Dictionary<string, object> jsonDict)
   ///
   /// This will be empty if no function calls are present.
   /// </summary>
-  public IEnumerable<ModelContent.FunctionCallPart> FunctionCalls =>
-      _functionCalls ?? new ReadOnlyCollection<ModelContent.FunctionCallPart>(
+  public IEnumerable<ModelContent.FunctionCallPart> FunctionCalls {
+    get {
+      return _functionCalls ?? new ReadOnlyCollection<ModelContent.FunctionCallPart>(
           new List<ModelContent.FunctionCallPart>());
+    }
+  }
 
   private LiveSessionToolCall(List<ModelContent.FunctionCallPart> functionCalls) {
     _functionCalls = new ReadOnlyCollection<ModelContent.FunctionCallPart>(
@@ -211,8 +214,11 @@ internal static LiveSessionToolCall FromJson(Dictionary<string, object> jsonDict
   /// <summary>
   /// The list of Function IDs to cancel.
   /// </summary>
-  public IEnumerable<string> FunctionIds =>
-      _functionIds ?? new ReadOnlyCollection<string>(new List<string>());
+  public IEnumerable<string> FunctionIds {
+    get {
+      return _functionIds ?? new ReadOnlyCollection<string>(new List<string>());
+    }
+  }
 
   private LiveSessionToolCallCancellation(List<string> functionIds) {
     _functionIds = new ReadOnlyCollection<string>(

firebaseai/src/ModelContent.cs

@@ -35,12 +35,20 @@ public readonly struct ModelContent {
   /// The role of the entity creating the `ModelContent`. For user-generated client requests,
   /// for example, the role is `user`.
   /// </summary>
-  public string Role => string.IsNullOrWhiteSpace(_role) ? "user" : _role;
+  public string Role {
+    get {
+      return string.IsNullOrWhiteSpace(_role) ? "user" : _role;
+    }
+  }
 
   /// <summary>
   /// The data parts comprising this `ModelContent` value.
   /// </summary>
-  public IEnumerable<Part> Parts => _parts ?? new ReadOnlyCollection<Part>(new List<Part>());
+  public IEnumerable<Part> Parts {
+    get {
+      return _parts ?? new ReadOnlyCollection<Part>(new List<Part>());
+    }
+  }
 
   /// <summary>
   /// Creates a `ModelContent` with the given `Part`s, using the default `user` role.

firebaseai/src/ResponseModality.cs

@@ -20,8 +20,32 @@ namespace Firebase.AI {
 /// The response type the model should return with.
 /// </summary>
 public enum ResponseModality {
+  /// <summary>
+  /// Specifies that the model should generate textual content.
+  ///
+  /// Use this modality when you need the model to produce written language, such as answers to
+  /// questions, summaries, creative writing, code snippets, or structured data formats like JSON.
+  /// </summary>
   Text,
+  /// <summary>
+  /// **Public Experimental**: Specifies that the model should generate image data.
+  ///
+  /// Use this modality when you want the model to create visual content based on the provided input
+  /// or prompts. The response might contain one or more generated images. See the [image
+  /// generation](https://cloud.google.com/vertex-ai/generative-ai/docs/multimodal-response-generation#image-generation)
+  /// documentation for more details.
+  ///
+  /// > Warning: Image generation using Gemini 2.0 Flash is a **Public Experimental** feature, which
+  /// > means that it is not subject to any SLA or deprecation policy and could change in
+  /// > backwards-incompatible ways.
+  /// </summary>
   Image,
+  /// <summary>
+  /// **Public Experimental**: Specifies that the model should generate audio data.
+  /// 
+  /// Use this modality with a `LiveGenerationConfig` to create audio content based on the
+  /// provided input or prompts with a `LiveGenerativeModel`.
+  /// </summary>
   Audio,
 }
 

firebaseai/src/Schema.cs

@@ -100,7 +100,7 @@ public static StringFormat Custom(string format) {
   /// <summary>
   /// Possible values of the element of type "String" with "enum" format.
   /// </summary>
-  public IEnumerable<string> EnumValues => _enumValues;
+  public IEnumerable<string> EnumValues { get { return _enumValues; } }
   /// <summary>
   /// Schema of the elements of type "Array".
   /// </summary>
@@ -132,7 +132,7 @@ public static StringFormat Custom(string format) {
   /// <summary>
   /// Required properties of type "Object".
   /// </summary>
-  public IEnumerable<string> RequiredProperties => _requiredProperties;
+  public IEnumerable<string> RequiredProperties { get { return _requiredProperties; } }
 
   private readonly ReadOnlyCollection<string> _propertyOrdering;
   /// <summary>
@@ -143,7 +143,7 @@ public static StringFormat Custom(string format) {
   /// not preserve this order. This parameter primarily affects the raw JSON string
   /// serialization.
   /// </summary>
-  public IEnumerable<string> PropertyOrdering => _propertyOrdering;
+  public IEnumerable<string> PropertyOrdering { get { return _propertyOrdering; } }
 
   private readonly ReadOnlyCollection<Schema> _anyOf;
   /// <summary>
@@ -156,7 +156,7 @@ public static StringFormat Custom(string format) {
   /// Schema.AnyOf(new [] { Schema.String(), Schema.Int() })
   /// ```
   /// </summary>
-  public IEnumerable<Schema> AnyOfSchemas => _anyOf;
+  public IEnumerable<Schema> AnyOfSchemas { get { return _anyOf; } }
 
   private Schema(
       SchemaType? type,