1 files changed, 14 insertions, 13 deletions

diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
index 8fe8fa2a..9c11e1db 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
@@ -1,6 +1,5 @@
-#nullable disable
-
 using System;
+using System.Linq;
 
 namespace StardewModdingAPI.Toolkit.Framework.Clients.WebApi
 {
@@ -11,37 +10,39 @@ namespace StardewModdingAPI.Toolkit.Framework.Clients.WebApi
         ** Accessors
         *********/
         /// <summary>The unique mod ID.</summary>
-        public string ID { get; set; }
+        public string ID { get; }
 
         /// <summary>The namespaced mod update keys (if available).</summary>
-        public string[] UpdateKeys { get; set; }
+        public string[] UpdateKeys { get; private set; }
 
         /// <summary>The mod version installed by the local player. This is used for version mapping in some cases.</summary>
-        public ISemanticVersion InstalledVersion { get; set; }
+        public ISemanticVersion? InstalledVersion { get; }
 
         /// <summary>Whether the installed version is broken or could not be loaded.</summary>
-        public bool IsBroken { get; set; }
+        public bool IsBroken { get; }
 
 
         /*********
         ** Public methods
         *********/
-        /// <summary>Construct an empty instance.</summary>
-        public ModSearchEntryModel()
-        {
-            // needed for JSON deserializing
-        }
-
         /// <summary>Construct an instance.</summary>
         /// <param name="id">The unique mod ID.</param>
         /// <param name="installedVersion">The version installed by the local player. This is used for version mapping in some cases.</param>
         /// <param name="updateKeys">The namespaced mod update keys (if available).</param>
         /// <param name="isBroken">Whether the installed version is broken or could not be loaded.</param>
-        public ModSearchEntryModel(string id, ISemanticVersion installedVersion, string[] updateKeys, bool isBroken = false)
+        public ModSearchEntryModel(string id, ISemanticVersion? installedVersion, string[]? updateKeys, bool isBroken = false)
         {
             this.ID = id;
             this.InstalledVersion = installedVersion;
             this.UpdateKeys = updateKeys ?? Array.Empty<string>();
+            this.IsBroken = isBroken;
+        }
+
+        /// <summary>Add update keys for the mod.</summary>
+        /// <param name="updateKeys">The update keys to add.</param>
+        public void AddUpdateKeys(params string[] updateKeys)
+        {
+            this.UpdateKeys = this.UpdateKeys.Concat(updateKeys).ToArray();
         }
     }
 }