docs: public Observable<List<VirtualMachineExtensionImageInner>> listTypesAsync(String location, String publisherName) {
          return listTypesWithServiceResponseAsync(location, publisherName).map(new Func1<ServiceResponse<List<VirtualMachineExtensionImageInner>>, List<VirtualMachineExtensionImageInner>>() {
              @Override
              public List<VirtualMachineExtensionImageInner> call(ServiceResponse<List<VirtualMachineExtensionImageInner>> response) {
                  return response.body();
              }
          });
      }