feat: create chat message

src/AnthropicClient/Models/InputProperty.cs

@@ -0,0 +1,42 @@
+using System.Text.Json.Serialization;
+
+using AnthropicClient.Utils;
+
+namespace AnthropicClient.Models;
+
+/// <summary>
+/// Represents an input property.
+/// </summary>
+public class InputProperty
+{
+  /// <summary>
+  /// Gets the type of the input property.
+  /// </summary>
+  public string Type { get; init; } = string.Empty;
+
+  /// <summary>
+  /// Gets the description of the input property.
+  /// </summary>
+  public string Description { get; init; } = string.Empty;
+
+  [JsonConstructor]
+  internal InputProperty()
+  {
+  }
+
+  /// <summary>
+  /// Initializes a new instance of the <see cref="InputProperty"/> class.
+  /// </summary>
+  /// <param name="type">The type of the input property.</param>
+  /// <param name="description">The description of the input property.</param>
+  /// <exception cref="ArgumentNullException">Thrown when the type or description is null.</exception>
+  /// <returns>A new instance of the <see cref="InputProperty"/> class.</returns>
+  public InputProperty(string type, string description)
+  {
+    ArgumentValidator.ThrowIfNull(type, nameof(type));
+    ArgumentValidator.ThrowIfNull(description, nameof(description));
+
+    Type = type;
+    Description = description;
+  }
+}