project_start/phpstorm-stubs/rdkafka/RdKafka/KafkaConsumerTopic.php

<?php

namespace RdKafka;

class KafkaConsumerTopic extends Topic
{
    private function __construct() {}

    /**
     * @param int $partition
     * @param int $offset
     *
     * @return void
     */
    public function offsetStore($partition, $offset) {}
}