Make lots of models nullable

src/Umbraco.Core/Models/TemplateQuery/QueryConditionExtensions.cs

@@ -8,7 +8,7 @@ namespace Umbraco.Extensions
     public static class QueryConditionExtensions
     {
         private static Lazy<MethodInfo> StringContainsMethodInfo =>
-            new Lazy<MethodInfo>(() => typeof(string).GetMethod("Contains", new[] {typeof(string)}));
+            new Lazy<MethodInfo>(() => typeof(string).GetMethod("Contains", new[] {typeof(string)})!);
 
         public static Expression<Func<T, bool>> BuildCondition<T>(this QueryCondition condition, string parameterAlias)
         {