AFAICS, unlike what can be done TTW, setting groups during user creation through
plone.restapi is not provided:
- the documentation about user creation doesn't mention any way for setting the groups the new user should belongs to,
- OK, it is always possible to update a group afterwards thanks to the
usersobject which is a mapping of a
user_idand a boolean indicating adding or removing from the group.
But am I missing something?