Zauberfisch/sapphire — comment on commit 59566b2fbfaed9cc93ad71c25fdfd94e7e2c7dff
File: forms/UploadField.php line 85
By chillu:

Permission check is handled by the form including this field, and the controller including this form.
No need for additional checks (other than enforcing UploadValidator rules) on the field itself.