code: protected function driver()
      {
          if ($this->getDefaultDriver() === 'argon') {
              return $this->createArgonDriver();
          } elseif ($this->getDefaultDriver() === 'argon2id') {
              return $this->createArgon2IdDriver();
          }
  
          return $this->createBcryptDriver();
      }
docs: Get the default driver.
  
  @return mixed