src/Viserio/Component/Session/Store.php
private function mergeNewFlashes(array $keys): void
    {
        $values = \array_unique(\array_merge($this->get('_flash.new', []), $keys));

        $this->set('_flash.new', $values);
    }
private function mergeNewFlashes(array $keys): void
    {
        $values = \array_unique(\array_merge($this->get('_flash.new', []), $keys));

        $this->set('_flash.new', $values);
    }
Merge new flash keys into the new flash array.

@param array $keys

@return void