anchor.diff:  
       % Add him to a nested group, which belongs to a group, which belongs to a
       % group that has the privileges and check if he can list users of provider.
  -    TopGroup = create_3_nested_groups(Config, TestUser),
  +    {_, _, TopGroup} = create_3_nested_groups(Config, TestUser),
       % The user should still not be able to list users of provider as the group
       % does not have privileges.
       ?assert(check_list_users_of_provider(403, TestUser, Provider, undefined)),
  
positive.code:         request => #{
              method => get,
              path => [<<"/providers/">>, ProviderId],
              auth => Issuer
          },
          expect => #{
  
negative.code: 
      % Add him to a nested group, which belongs to a group, which belongs to a
      % group that has the privileges and check if he can list spaces.
      {_, _, TopGroup} = create_3_nested_groups(Config, TestUser),
      % The user should still not be able to list spaces as the group
      % does not have privileges.
      ?assert(check_list_spaces(403, TestUser, undefined)),
  