I'm recreating the MultiValueDictionary type and part of that means recreating tests. I'm working with a test for the `Add(TKey, TValue)` function, here: https://github.com/dotnet/corefxlab/blob/archive/tests/Microsoft.Experimental.Collections.Tests/Microsoft/Collections/Extensions/MultiValueDictionaryTests.cs#L577-L582 ```cs private AddDelegate<TKey, TValue>[] Add<TKey, TValue>() { var ret = new AddDelegate<TKey, TValue>[1]; ret[0] = (MultiValueDictionary<TKey, TValue> mvd, TKey key, TValue value) => mvd.Add(key, value); return ret; } ``` When I try to rebuild this method, I am using this code: ```cs private static AddDelegate<TKey, TValue>[] Add<TKey, TValue>() where TKey : notnull => [(mvd, key, value) => mvd.Add(key, value)]; ^ SA1008 Openening parenthesis should be preceded by a space. ``` If I follow its advice and provide a space, then I get a different error. ```cs => [ (mvd, key, value) => mvd.Add(key, value)]; ^ SA1010 Opening square brackets should not be followed by a space. ```