groups.add("group_" + i);
            List<String> roles = new ArrayList<>();
            List<String> groupIds = new ArrayList<>();
            groupIds.add("id_" + i);

            try {
                method.invoke(authenticator, null, groups, roles, groupIds);
            } catch (Exception e) {
                caughtException.set(e);
            }
        }

pkg os/exec, func CommandContext(context.Context, string, ...string) *Cmd
pkg os/user, func LookupGroup(string) (*Group, error)
pkg os/user, func LookupGroupId(string) (*Group, error)
pkg os/user, method (*User) GroupIds() ([]string, error)
pkg os/user, method (UnknownGroupError) Error() string
pkg os/user, method (UnknownGroupIdError) Error() string
pkg os/user, type Group struct
pkg os/user, type Group struct, Gid string

          </association>
        </field>
        <field>
          <name>pluginGroups</name>
          <version>1.0.0+</version>
          <description>
            List of groupIds to search for a plugin when that plugin
            groupId is not explicitly provided.
          </description>
          <association>
            <type>String</type>
            <multiplicity>*</multiplicity>