error CS1929: 'IGrouping<string, BacktestResultTest>' does not contain a definition for 'Aggregate' and the best extension method overload 'ImmutableArrayExtensions.Aggregate<(int, int, int), BacktestResult>(ImmutableArray<BacktestResult>, (int, int, int), Func<(int, int, int), BacktestResult, (int, int, int)>)' requires a receiver of type 'ImmutableArray<BacktestResult>'
error CS8130: Cannot infer the type of implicitly-typed deconstruction variable 'wins'.
error CS8130: Cannot infer the type of implicitly-typed deconstruction variable 'losses'.
error CS8130: Cannot infer the type of implicitly-typed deconstruction variable 'draws'.