c, ok := b.caches[id]
	if ok {
		// Delete from root map.
		list := b.cachesRoot[c.root]
		for i, lid := range list {
			if id == lid {
				list = append(list[:i], list[i+1:]...)
				break
			}
		}
		b.cachesRoot[c.root] = list
		delete(b.caches, id)
		b.updated = true
	}
	b.mu.Unlock()
	if ok {
		c.delete(context.Background())
	}

        // For each of 4 indices: delete old + delete backup = 8 deletes
        assertEquals(8, testClient.deletedIndices.size());
        // Verify original index names appear in deleted list (old index deletion at step 3)
        boolean foundOriginalDelete = false;
        for (final String deleted : testClient.deletedIndices) {
            if (!deleted.contains(".backup.") && !deleted.contains(".rebuild.")) {

//
// Size parameter set to 0 makes cache of unlimited size, e.g. turns LRU mechanism off.
//
// Providing 0 TTL turns expiring off.
//
// Delete expired entries every 1/100th of ttl value. Goroutine which deletes expired entries runs indefinitely.
func NewLRU[K comparable, V any](size int, onEvict EvictCallback[K, V], ttl time.Duration) *LRU[K, V] {
	if size < 0 {
		size = 0
	}
	if ttl <= 0 {

    }

    /**
     * Deletes a boost document rule setting by ID.
     *
     * @param id the ID of the boost document rule to delete
     * @return JSON response indicating the deletion status
     */
    // DELETE /api/admin/boostdoc/setting/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String id) {

    }

    // DELETE /api/admin/group/setting/{id}
    /**
     * Deletes a specific group setting.
     * Prevents deletion of the currently logged-in user's group for security.
     *
     * @param id the group setting ID to delete
     * @return JSON response with deletion status
     */
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String id) {

    }

    /**
     * Deletes a bad word setting by ID.
     *
     * @param id the ID of the bad word to delete
     * @return JSON response indicating the deletion status
     */
    // DELETE /api/admin/badword/setting/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String id) {
        try {

        });
        return redirect(getClass());
    }

    /**
     * Deletes a duplicate host configuration.
     *
     * @param form the edit form containing the duplicate host ID to delete
     * @return HTML response redirecting to the duplicate host list
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final EditForm form) {

        });
        return redirect(getClass());
    }

    /**
     * Deletes a role item.
     *
     * @param form the edit form containing the ID of the item to delete
     * @return HTML response redirecting to the list page after deletion
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final EditForm form) {
        verifyCrudMode(form.crudMode, CrudMode.DETAILS, this::asListHtml);

    }

    /**
     * Deletes a data config setting by ID.
     *
     * @param id the ID of the data config to delete
     * @return JSON response indicating the deletion status
     */
    // DELETE /api/admin/dataconfig/setting/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String id) {
        dataConfigService.getDataConfig(id).ifPresent(entity -> {

     */
    public void delete(final DataConfig dataConfig) {
        dataConfigBhv.delete(dataConfig, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });
    }

    /**
     * Retrieves a data configuration by its unique identifier.
     *
     * @param id the unique identifier of the data configuration