userCode = cipher.encrypt(userCode);
        if (fessConfig.isValidUserCode(userCode)) {
            return userCode;
        }
        return null;
    }

    /**
     * Deletes the user code cookie from the client browser.
     * This method removes the user identification cookie by setting it to an empty value with zero max age.
     *
     * @param request the HTTP servlet request
     */

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

    /**
     * Deletes an existing elevate word entry.
     *
     * @param form edit form containing the elevate word ID to delete
     * @return redirect response to the main elevate word page
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final EditForm form) {
        verifyCrudMode(form.crudMode, CrudMode.DETAILS, this::asListHtml);

                } else if (getParamValue(localParams, "event.delete", "delete").equals(eventType)) {
                    // deleted file
                    deleteDocument(localParams, dataMap);
                } else {
                    logger.warn("Unknown event type: '{}'. Supported: [create, modify, delete]. url={}", eventType,

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

    /**
     * Deletes a scheduled job.
     *
     * @param form the edit form containing the ID of the job 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);

		default:
			return err
		}
	}

	// Delete parent directory obviously not recursively. Errors for
	// parent directories shouldn't trickle down.
	s.deleteFile(basePath, pathutil.Dir(pathutil.Clean(deletePath)), false, false)

	return nil
}

// DeleteBulk - delete many files in bulk to trash.
// this delete does not recursively delete empty
// parents, if you need empty parent delete support

                .prepareCreate(analyzerSettingsIndexName)
                .setSettings(settings)
                .execute()
                .actionGet(this.settings.getIndicesTimeout());
    }

    /**
     * Deletes the analyzer settings.
     */
    protected void deleteAnalyzerSettings() {
        client.admin().indices().prepareDelete(analyzerSettingsIndexName).execute().actionGet(settings.getIndicesTimeout());
    }

...

func (kvs KVS) Get(key string) string {
	v, ok := kvs.Lookup(key)
	if ok {
		return v
	}
	return ""
}

// Delete - deletes the key if present from the KV list.
func (kvs *KVS) Delete(key string) {
	for i, kv := range *kvs {
		if kv.Key == key {
			*kvs = append((*kvs)[:i], (*kvs)[i+1:]...)
			return
		}
	}
}

    }

    /**
     * Deletes an existing synonym item.
     *
     * @param form the edit form containing the synonym item to delete
     * @return HTML response after deleting the synonym item
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final EditForm form) {
        verifyCrudMode(form.crudMode, CrudMode.DETAILS, form.dictId);

     *
     * @param fileName the name of the file to delete
     * @param jarPath the path to the JAR file
     * @throws PluginException if deletion fails
     */
    protected void uninstall(final String fileName, final Path jarPath) {
        try {
            Files.delete(jarPath);
        } catch (final IOException e) {
            throw new PluginException("Failed to delete the artifact " + fileName, e);
        }
    }