public static function fromPupilsMentorsArrays(array $pupils, array $mentors)
{
$userCol = new ApiUserCollection();
$userCol->pupils = array_map(function ($u) {
return ApiUser::fromUser($u);
}, $pupils);
$userCol->mentors = array_map(function ($u) {
return ApiUser::fromUser($u);
}, $mentors);
return $userCol;
}
