ParsePermissions

private static List<ModuleModel> ParsePermissions(Type permissionType)
{
    var modules = permissionType
        .GetNestedTypes()
        .Where(c => c.GetCustomAttribute<ModuleDescriptionAttribute>() != null)
        .Select(c => new ModuleModel
        {
            Name = c.Name,
            Description = c.GetCustomAttribute<ModuleDescriptionAttribute>(),
            Permissions = c
            .GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy)
            .Where(c => c.FieldType == typeof(string))
            .ToDictionary(c => c.Name, c => new PermissionModel
            {
                Name = c.Name,
                Value = c.GetValue(null)?.ToString(),
                Description = c.GetCustomAttribute<PermissionDescriptionAttribute>()
            })
        }).ToList();

    return modules;
}