fkooman\OAuth\Client\Context::getUserId PHP Method

    public function getUserId()
    {
        return $this->userId;
    }

 public function deleteStateForContext($clientConfigId, Context $context)
 {
     $stmt = $this->db->prepare(sprintf('DELETE FROM %s WHERE client_config_id = :client_config_id AND user_id = :user_id', $this->prefix . 'states'));
     $stmt->bindValue(':client_config_id', $clientConfigId, PDO::PARAM_STR);
     $stmt->bindValue(':user_id', $context->getUserId(), PDO::PARAM_STR);
     $stmt->execute();
     return 1 === $stmt->rowCount();
 }