feat: create chat message

src/AnthropicClient/Models/SpecificToolChoice.cs

@@ -0,0 +1,34 @@
+using System.Text.Json.Serialization;
+
+using AnthropicClient.Utils;
+
+namespace AnthropicClient.Models;
+
+/// <summary>
+/// Represents the specific tool choice mode.
+/// </summary>
+public class SpecificToolChoice : ToolChoice
+{
+  /// <summary>
+  /// Gets the name of the tool.
+  /// </summary>
+  public string Name { get; init; } = string.Empty;
+
+  [JsonConstructor]
+  internal SpecificToolChoice() : base(ToolChoiceType.Tool)
+  {
+  }
+
+  /// <summary>
+  /// Initializes a new instance of the <see cref="SpecificToolChoice"/> class.
+  /// </summary>
+  /// <param name="name">The name of the tool.</param>
+  /// <exception cref="ArgumentNullException">Thrown when the name is null.</exception>
+  /// <returns>A new instance of the <see cref="SpecificToolChoice"/> class.</returns>
+  public SpecificToolChoice(string name) : base(ToolChoiceType.Tool)
+  {
+    ArgumentValidator.ThrowIfNull(name, nameof(name));
+
+    Name = name;
+  }
+}