docs: public ServiceFuture<ResourceListKeysInner> regenerateKeysAsync(String resourceGroupName, String namespaceName, String authorizationRuleName, String policyKey, final ServiceCallback<ResourceListKeysInner> serviceCallback) {
          return ServiceFuture.fromResponse(regenerateKeysWithServiceResponseAsync(resourceGroupName, namespaceName, authorizationRuleName, policyKey), serviceCallback);
      }