this.groups = groups;
        }

        /**
         * Sets the user's role assignments.
         * @param roles Array of role names.
         */
        public synchronized void setRoles(final String[] roles) {
            this.roles = roles;
        }

        /**
         * Resets permissions to force recalculation on next getPermissions() call.

```java
SuggestResponse response = suggester.suggest()
    .setQuery("search term")
    .setSize(10)                           // max results
    .setTags(new String[]{"category"})      // filter by tags
    .setRoles(new String[]{"user"})         // filter by roles  
    .setLanguages(new String[]{"en", "ja"}) // language preference
    .setFields(new String[]{"title"})       // search specific fields
    .execute()
    .getResponse();

     */
    public void setTags(final String[] tags) {
        this.tags = tags;
    }

    /**
     * Sets the roles of the suggest item.
     * @param roles The roles to set.
     */
    public void setRoles(final String[] roles) {
        this.roles = roles;
    }

    /**
     * Sets the languages of the suggest item.
     * @param languages The languages to set.
     */

            op.setRefreshPolicy(Constants.TRUE);
        });

        userBhv.selectCursor(cb -> cb.query().setRoles_Equal(role.getId()), entity -> {
            entity.setRoles(
                    stream(entity.getRoles()).get(stream -> stream.filter(s -> !s.equals(role.getId())).toArray(n -> new String[n])));
            userBhv.insertOrUpdate(entity);
        });
    }

    /**

        mergedItem.setTags(mergeStringArrays(item1.getTags(), item2.getTags()));
        mergedItem.setLanguages(mergeStringArrays(item1.getLanguages(), item2.getLanguages()));
        mergedItem.setRoles(mergeStringArrays(item1.getRoles(), item2.getRoles()));

        // Merge kinds
        mergedItem.setKinds(mergeKinds(item1.getKinds(), item2.getKinds()));

        // Take newer values from item2

            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()))

    private User createTestUser(String username, String password) {
        User user = new User();
        user.setName(username);
        user.setPassword(password);
        user.setRoles(new String[] { "role1", "role2" });
        user.setGroups(new String[] { "group1", "group2" });
        return user;
    }

    // Test LdapManager implementation

        final User user = new User();
        assertNull(user.getRoles());

        final String[] roles = new String[] { "admin", "user" };
        user.setRoles(roles);
        assertNotNull(user.getRoles());
        assertEquals(2, user.getRoles().length);
        assertEquals("admin", user.getRoles()[0]);
        assertEquals("user", user.getRoles()[1]);
    }

    @Test

        item.setDocFreq(docFreq);
        item.setQueryFreq(queryFreq);
        item.setUserBoost(userBoost);
        item.setTags(tags.toArray(new String[tags.size()]));
        item.setRoles(roles.toArray(new String[roles.size()]));
        item.setLanguages(languages.toArray(new String[languages.size()]));

        final SuggestItem.Kind[] itemKinds = new SuggestItem.Kind[kinds.size()];

        item.setTags(tags);
        assertArrayEquals(tags, item.getTags());

        // Test roles
        String[] roles = { "admin", "user" };
        item.setRoles(roles);
        assertArrayEquals(roles, item.getRoles());

        // Test languages
        String[] languages = { "en", "fr" };
        item.setLanguages(languages);
        assertArrayEquals(languages, item.getLanguages());