anchor.diff:  group_privilege_check(group_leave_space, Users, GID, SID) ->
       [{_UserId1, UserReqParams1}, {UserId2, UserReqParams2} | _] = Users,
       InvitationToken = get_space_invitation_token(groups, SID, UserReqParams1),
  -    R1 = join_group_to_space(InvitationToken, GID, UserReqParams1),
  +    join_group_to_space(InvitationToken, GID, UserReqParams1),
       %% test if user2 lacks group_leaves_space privileges
       ?assertMatch({bad_response_code, _},
           check_status(group_leaves_space(GID, SID, UserReqParams2))),
  -    R2 = set_group_privileges_of_user(GID, UserId2, [group_leave_space], UserReqParams1),
  +    set_group_privileges_of_user(GID, UserId2, [group_leave_space], UserReqParams1),
       ?assertMatch(ok, check_status(group_leaves_space(GID, SID, UserReqParams2))),
       clean_group_privileges(GID, UserId2, UserReqParams1);
   
  
positive.code:         "/spaces/0/groups/0/privileges", "/spaces/0/providers",
          "/spaces/0/providers/token", "/spaces/0/providers/0"
      ],
      {RestAddress, Headers, Options} = ProviderReqParams,
      %% Send requests without certs (no options)
      check_bad_requests(RequireCerts, get, <<"">>, {RestAddress, Headers, []}),
  
  
negative.code:     join_user_to_space(InvitationToken, UserReqParams2),
  
      SupportToken = get_space_support_token(SID, UserReqParams1),
      support_space(SupportToken, ?SPACE_SIZE1, ProviderReqParams),
  
      Users = [{UserId1, UserReqParams1}, {UserId2, UserReqParams2}, {UserId3, UserReqParams3}],
  
  