groupBhv.delete(group, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

        userBhv.selectCursor(cb -> cb.query().setGroups_Equal(group.getId()), entity -> {
            entity.setGroups(
                    stream(entity.getGroups()).get(stream -> stream.filter(s -> !s.equals(group.getId())).toArray(n -> new String[n])));
            userBhv.insertOrUpdate(entity);
        });

    }

    public String[] getRoleNames() {
        return stream(getRoles()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        return stream(getGroups()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    private String decode(final String value) {
        return new String(Base64.getDecoder().decode(value), Constants.CHARSET_UTF_8);
    }

		{call: "Setgroups([]int{0,1,2,3})", fn: func() error { return syscall.Setgroups([]int{0, 1, 2, 3}) }, filter: "Groups:", expect: "\t0 1 2 3"},
		{call: "Setgroups(nil)", fn: func() error { return syscall.Setgroups(nil) }, filter: "Groups:", expect: ""},
		{call: "Setgroups([]int{0})", fn: func() error { return syscall.Setgroups([]int{0}) }, filter: "Groups:", expect: "\t0"},

            final RESULT result = entityType.newInstance();
            result.setName(DfTypeUtil.toString(source.get(NAME)));
            result.setPassword(DfTypeUtil.toString(source.get(PASSWORD)));
            result.setGroups(toStringArray(source.get(GROUPS)));
            result.setRoles(toStringArray(source.get(ROLES)));
            result.setAttributes(source.entrySet().stream().filter(e -> isAttribute(e.getKey()))

    public String[] getPermissions() {
        return user.getPermissions();
    }

    public String[] getRoles() {
        return user.getRoleNames();
    }

    public String[] getGroups() {
        return user.getGroupNames();
    }

    public boolean isEditable() {
        return user.isEditable();
    }

    public boolean hasRole(final String role) {

            permissions = null;
            return true;
        }

        public AuthenticationResult getAuthenticationResult() {
            return authResult;
        }

        public void setGroups(final String[] groups) {
            this.groups = groups;
        }

        public void setRoles(final String[] roles) {
            this.roles = roles;
        }
    }