code: public java.util.List<String> getVpnGatewayIds() {
          if (vpnGatewayIds == null) {
              vpnGatewayIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return vpnGatewayIds;
      }
docs: <p>
  One or more virtual private gateway IDs.
  </p>
  <p>
  Default: Describes all your virtual private gateways.
  </p>
  
  @return One or more virtual private gateway IDs.</p>
  <p>
  Default: Describes all your virtual private gateways.