code: public function create($account, $openId)
      {
          $params = [
                     'kf_account' => $account,
                     'openid' => $openId,
                    ];
  
          return $this->parseJSON('json', [self::API_CREATE, $params]);
      }
docs: Create a session.
  
  @param string $account
  @param string $openId
  
  @return \EasyWeChat\Support\Collection