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<?php
/**
 * @link https://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license https://www.yiiframework.com/license/
 */

namespace yii\base;

/**
 * StaticInstanceInterface is the interface for providing static instances to classes,
 * which can be used to obtain class meta information that can not be expressed in static methods.
 * For example: adjustments made by DI or behaviors reveal only at object level, but might be needed
 * at class (static) level as well.
 *
 * To implement the [[instance()]] method you may use [[StaticInstanceTrait]].
 *
 * @author Paul Klimov <klimov.paul@gmail.com>
 * @since 2.0.13
 * @see StaticInstanceTrait
 */
interface StaticInstanceInterface
{
    /**
     * Returns static class instance, which can be used to obtain meta information.
     * @param bool $refresh whether to re-create static instance even, if it is already cached.
     * @return static class instance.
     */
    public static function instance($refresh = false);
}