code: public Observable<ServiceResponse<VirtualWanSecurityProvidersInner>> supportedSecurityProvidersWithServiceResponseAsync(String resourceGroupName, String virtualWANName) {
          if (this.subscriptionId() == null) {
              throw new IllegalArgumentException("Parameter this.subscriptionId() is required and cannot be null.");
          }
          if (resourceGroupName == null) {
              throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
          }
          if (virtualWANName == null) {
              throw new IllegalArgumentException("Parameter virtualWANName is required and cannot be null.");
          }
          final String apiVersion = "2018-08-01";
          return service.supportedSecurityProviders(this.subscriptionId(), resourceGroupName, virtualWANName, apiVersion, this.acceptLanguage(), this.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<VirtualWanSecurityProvidersInner>>>() {
                  @Override
                  public Observable<ServiceResponse<VirtualWanSecurityProvidersInner>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<VirtualWanSecurityProvidersInner> clientResponse = supportedSecurityProvidersDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: Gives the supported security providers for the virtual wan.
  
  @param resourceGroupName The resource group name.
  @param virtualWANName The name of the VirtualWAN for which supported security providers are needed.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the VirtualWanSecurityProvidersInner object