code: public Observable<ServiceResponse<AzureReachabilityReportInner>> getAzureReachabilityReportWithServiceResponseAsync(String resourceGroupName, String networkWatcherName, AzureReachabilityReportParameters parameters) {
          if (resourceGroupName == null) {
              throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
          }
          if (networkWatcherName == null) {
              throw new IllegalArgumentException("Parameter networkWatcherName is required and cannot be null.");
          }
          if (this.client.subscriptionId() == null) {
              throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
          }
          if (parameters == null) {
              throw new IllegalArgumentException("Parameter parameters is required and cannot be null.");
          }
          Validator.validate(parameters);
          final String apiVersion = "2018-06-01";
          Observable<Response<ResponseBody>> observable = service.getAzureReachabilityReport(resourceGroupName, networkWatcherName, this.client.subscriptionId(), parameters, apiVersion, this.client.acceptLanguage(), this.client.userAgent());
          return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<AzureReachabilityReportInner>() { }.getType());
      }
docs: Gets the relative latency score for internet service providers from a specified location to Azure regions.
  
  @param resourceGroupName The name of the network watcher resource group.
  @param networkWatcherName The name of the network watcher resource.
  @param parameters Parameters that determine Azure reachability report configuration.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request