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<?php
declare(strict_types=1);
namespace Doctrine\Migrations\Version;
/**
* The DefaultAliasResolver class is responsible for resolving aliases like first, current, etc. to the actual version number.
*
* @internal
*/
interface AliasResolver
{
* Returns the version number from an alias.
* Supported aliases are:
* - first: The very first version before any migrations have been run.
* - current: The current version.
* - prev: The version prior to the current version.
* - next: The version following the current version.
* - latest: The latest available version.
* If an existing version number is specified, it is returned verbatim.
public function resolveVersionAlias(string $alias) : Version;
}