docs: public Observable<ResourceListKeysInner> regenerateKeysAsync(String resourceGroupName, String namespaceName, String authorizationRuleName) {
          return regenerateKeysWithServiceResponseAsync(resourceGroupName, namespaceName, authorizationRuleName).map(new Func1<ServiceResponse<ResourceListKeysInner>, ResourceListKeysInner>() {
              @Override
              public ResourceListKeysInner call(ServiceResponse<ResourceListKeysInner> response) {
                  return response.body();
              }
          });
      }