add culture based caching

ResourceString.Net.Logic/Properties/Resources.resx

@@ -5,7 +5,7 @@
         #region {0} 
 
         private static readonly Lazy<IResourceString> Lazy{0} = new Lazy<IResourceString>(
-            () => new ResourceManagerString("{0}", {1}, CultureInfo.CurrentCulture),
+            () => AddToCultureCache(new ResourceManagerString("{0}", {1}, GetDefaultCulture)),
             LazyThreadSafetyMode.PublicationOnly
         );
 
@@ -20,7 +20,7 @@
         internal static class {0} 
         {{
             private static readonly Lazy<IResourceString> LazyFormat = new Lazy<IResourceString>(
-                () => new ResourceManagerString("{0}", {1}, CultureInfo.CurrentCulture),
+                () => AddToCultureCache(new ResourceManagerString("{0}", {1}, GetDefaultCulture)),
                 LazyThreadSafetyMode.PublicationOnly
             );
 
@@ -32,10 +32,11 @@
   </data>
   <data name="ResourceFormatClassFromMethod" xml:space="preserve">
     <value>
-            public static IResourceString From({0}) => new FormattedResourceString(
+            public static IResourceString From({0}) => AddToCultureCache(new FormattedResourceString(
                 Format, 
+                GetDefaultCulture,
                 {1}
-            );
+            ));
     </value>
     <comment>0 = FromMethodSignature, 1 = ParameterNames</comment>
   </data>
@@ -71,6 +72,16 @@ namespace {0}
 
         public static ResourceManager ResourceManager => _ResourceManager.Value;
 
+        private static CultureInfo GetDefaultCulture()
+        {{
+            return CultureInfo.CurrentCulture;
+        }}
+
+        private static IResourceString AddToCultureCache(IResourceString source)
+        {{
+            return new CultureBasedCachedString(source, GetDefaultCulture);
+        }}
+
         #endregion // ResourceManager
     </value>
     <comment>0 = ResourceManagerTypeName, 1 = ClassName</comment>