docs: public Observable<ServiceResponse<VirtualMachineExtensionImageInner>> getWithServiceResponseAsync(String location, String publisherName, String type, String version) {
          if (location == null) {
              throw new IllegalArgumentException("Parameter location is required and cannot be null.");
          }
          if (publisherName == null) {
              throw new IllegalArgumentException("Parameter publisherName is required and cannot be null.");
          }
          if (type == null) {
              throw new IllegalArgumentException("Parameter type is required and cannot be null.");
          }
          if (version == null) {
              throw new IllegalArgumentException("Parameter version 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 (this.client.apiVersion() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
          }
          return service.get(location, publisherName, type, version, this.client.subscriptionId(), this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<VirtualMachineExtensionImageInner>>>() {
                  @Override
                  public Observable<ServiceResponse<VirtualMachineExtensionImageInner>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<VirtualMachineExtensionImageInner> clientResponse = getDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }