code: 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;
      }
docs: <p>
  Information about one or more internet gateways.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setInternetGateways(java.util.Collection)} or {@link #withInternetGateways(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param internetGateways
  Information about one or more internet gateways.
  @return Returns a reference to this object so that method calls can be chained together.