Question Generic avatar skeleton information

Hi. Is there a possibility to get skeleton bones information from generic avatar? For Humanoid type we have humanDescription array of Avatar class with skeleton bones. But for initially generic avatars "human" and "skeleton" arrays are empty. More interestingly, if I switch avatar type to Humanoid and switch it back to Generic, "skeleton" array will stay with correctly populated bone data. So maybe is there a way to not forcing Humanoid avatar for it?