thinkphp-butter/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/Annotation/Attribute.php

<?php

namespace Doctrine\Common\Annotations\Annotation;

/**
 * Annotation that can be used to signal to the parser
 * to check the attribute type during the parsing process.
 *
 * @Annotation
 */
final class Attribute
{
    /** @var string */
    public $name;

    /** @var string */
    public $type;

    /** @var bool */
    public $required = false;
}