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PHP

<?php
/**
* Interface Conditional.
*
* @link https://www.mwpd.io/
*
* @copyright 2019 Alain Schlesser
* @license MIT
*/
/**
* Original code modified for this project.
*
* @copyright 2021 Google LLC
* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
*/
declare(strict_types = 1);
namespace Google\Web_Stories\Infrastructure;
/**
* Something that can be instantiated conditionally.
*
* A class marked as being conditionally can be asked whether it should be
* instantiated through a static method. An example would be a service that is
* only available on the admin backend.
*
* This allows for a more systematic and automated optimization of how the
* different parts of the plugin are enabled or disabled.
*
* @internal
*
* @since 1.6.0
*/
interface Conditional {
/**
* Check whether the conditional object is currently needed.
*
* @since 1.6.0
*
* @return bool Whether the conditional object is needed.
*/
public static function is_needed(): bool;
}