❔ Predicate in LINQ GroupBy

public static ObservableCollection<GroupInfo> Create<TData>(IEnumerable<TData> data, Expression<Func<TData, string>> predicate)
    where TData : class
{
    IEnumerable<GroupInfo> query = data
        .GroupBy(item => item.Name.ToUpper())
        .OrderBy(g => g.Key)
        .Select(g => new GroupInfo(g.Key, g));

    return new ObservableCollection<GroupInfo>(query);
}