nullability fix

Author: HaikAsatryan

src/DistributedCache/DistributedCache.csproj

@@ -8,13 +8,13 @@
         <PackageReadmeFile>Readme.md</PackageReadmeFile>
         <Authors>Pandatech</Authors>
         <Copyright>MIT</Copyright>
-        <Version>4.0.0</Version>
+        <Version>4.0.1</Version>
         <PackageId>Pandatech.DistributedCache</PackageId>
         <Title>Pandatech Distributed Cache</Title>
         <PackageTags>pandatech;cache;hybrid-cache;distributed-cahce;message-pack;rate-limiting;redis-lock;redis;fusion-cache</PackageTags>
         <Description>Pandatech.DistributedCache is a lightweight .NET library that extends the new HybridCache abstraction for seamless distributed caching on top of Redis. It provides strongly typed caching with MessagePack serialization, distributed locking, rate limiting, and stampede protection. With fewer than 500 lines of code, it is both easy to understand and simple to adopt, while still offering robust features for production environments.</Description>
         <RepositoryUrl>https://github.com/PandaTechAM/be-lib-distributed-cache</RepositoryUrl>
-        <PackageReleaseNotes>Changed ICacheService with HybridCache interface. Not backward compatible with previous version</PackageReleaseNotes>
+        <PackageReleaseNotes>Nullability fix</PackageReleaseNotes>
     </PropertyGroup>
 
     <ItemGroup>

src/DistributedCache/Extensions/HybridCacheExtensions.cs

@@ -20,7 +20,7 @@ public static async ValueTask<TValue> GetOrDefaultAsync<TValue>(this HybridCache
       );
    }
 
-   public static async ValueTask<(bool Exists, TValue? Value)> TryGetAsync<TValue>(this HybridCache cache,
+   public static async ValueTask<(bool Exists, TValue Value)> TryGetAsync<TValue>(this HybridCache cache,
       string key,
       CancellationToken ct = default)
    {