docs: public DescribeInternetGatewaysResult withInternetGateways(InternetGateway... internetGateways) {
          if (this.internetGateways == null) {
              setInternetGateways(new com.amazonaws.internal.SdkInternalList<InternetGateway>(internetGateways.length));
          }
          for (InternetGateway ele : internetGateways) {
              this.internetGateways.add(ele);
          }
          return this;
      }