feature: first

NuGet/Models/ResourceType.cs

@@ -0,0 +1,26 @@
+using System.Text.Json.Serialization;
+using NuGet.Converters;
+using NuGet.Versioning;
+
+namespace NuGet.Models;
+
+[JsonConverter(typeof(ResourceTypeJsonConverter))]
+public record ResourceType(string Id, NuGetVersion? Version)
+{
+    public static ResourceType Parse(string typeString)
+    {
+        var slash = typeString.IndexOf('/');
+        
+        if (slash < 0)
+            return new ResourceType(typeString, null);
+        
+        var id = typeString[..slash];
+        var versionStr = typeString[(slash + 1)..];
+
+        return NuGetVersion.TryParse(versionStr, out var version)
+            ? new ResourceType(id, version)
+            : new ResourceType(id, null);
+    }
+
+    public override string ToString() => $"{Id}/{Version}";
+}