docs: public ServiceFuture<FirewallRuleInner> beginCreateOrUpdateAsync(String resourceGroupName, String serverName, String firewallRuleName, FirewallRuleInner parameters, final ServiceCallback<FirewallRuleInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, serverName, firewallRuleName, parameters), serviceCallback);
      }