chore: import upstream snapshot with attribution

dotnet/src/Microsoft.Agents.AI.DurableTask/State/DurableAgentStateUriContent.cs

@@ -0,0 +1,44 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Text.Json.Serialization;
+using Microsoft.Extensions.AI;
+
+namespace Microsoft.Agents.AI.DurableTask.State;
+
+/// <summary>
+/// Represents URI content for a durable agent state message.
+/// </summary>
+internal sealed class DurableAgentStateUriContent : DurableAgentStateContent
+{
+    /// <summary>
+    /// Gets the URI of the content.
+    /// </summary>
+    [JsonPropertyName("uri")]
+    public required Uri Uri { get; init; }
+
+    /// <summary>
+    /// Gets the media type of the content.
+    /// </summary>
+    [JsonPropertyName("mediaType")]
+    public required string MediaType { get; init; }
+
+    /// <summary>
+    /// Creates a <see cref="DurableAgentStateUriContent"/> from a <see cref="UriContent"/>.
+    /// </summary>
+    /// <param name="uriContent">The <see cref="UriContent"/> to convert.</param>
+    /// <returns>A <see cref="DurableAgentStateUriContent"/> representing the original content.</returns>
+    public static DurableAgentStateUriContent FromUriContent(UriContent uriContent)
+    {
+        return new DurableAgentStateUriContent()
+        {
+            MediaType = uriContent.MediaType,
+            Uri = uriContent.Uri
+        };
+    }
+
+    /// <inheritdoc/>
+    public override AIContent ToAIContent()
+    {
+        return new UriContent(this.Uri, this.MediaType);
+    }
+}