switchAlias example

        $this->backlogReader->setLastBacklogId($lastId);
    }

    private function createAlias(IndexConfiguration $configuration)
    {
        $currentAlias = $configuration->getAlias();
        $aliasExists = $this->client->indices()->existsAlias(['name' => $currentAlias]);

        if ($aliasExists) {
            $this->switchAlias($configuration);

            return;
        }

        $indexExists = $this->client->indices()->exists(['index' => $currentAlias]);
        if ($indexExists) {
            $this->client->indices()->delete(['index' => $currentAlias]);
        }

        $this->client->indices()->putAlias([
            'index' => $configuration->getName(),
            

$this->client->indices()->refresh(['index' => $index]);

        $progress->finish();
        $this->evaluation->finish();
    }

    private function createAlias(string $index, string $alias): void
    {
        $exist = $this->client->indices()->existsAlias(['name' => $alias]);

        if ($exist) {
            $this->switchAlias($index, $alias);

            return;
        }

        $this->client->indices()->putAlias([
            'index' => $index,
            'name' => $alias,
        ]);
    }

    private function switchAlias(string $index, string $alias): void
    {