code: public function send(array $params)
      {
          $base = [
              'device' => $this->device,
              'email' => $this->email,
              'password' => $this->password,
          ];
  
          $params = array_merge($base, $params);
  
          $response = $this->http->post('https://smsgateway.me/api/v3/messages/send', [
              'form_params' => $params,
          ]);
  
          return json_decode($response->getBody(), true);
      }
docs: @param array $params
  
  @return array