in lib/src/permissions.dart [37:48]
int _permissionBitIndex(_FilePermission permission, _FilePermissionRole role) {
switch (permission) {
case _FilePermission.setUid:
return 11;
case _FilePermission.setGid:
return 10;
case _FilePermission.sticky:
return 9;
default:
return (role.index * 3) + permission.index;
}
}