MatthiasMullie\Scrapbook\Psr6\Repository::exists PHP Method

    public function exists($unique)
    {
        if (array_key_exists($unique, $this->unresolved)) {
            $this->resolve();
        }
        return array_key_exists($unique, $this->resolved);
    }

 /**
  * {@inheritdoc}
  */
 public function isHit()
 {
     if ($this->isHit !== null) {
         return $this->isHit;
     }
     return $this->repository->exists($this->hash);
 }