code: public void setVpnGateways(java.util.Collection<VpnGateway> vpnGateways) {
          if (vpnGateways == null) {
              this.vpnGateways = null;
              return;
          }
  
          this.vpnGateways = new com.amazonaws.internal.SdkInternalList<VpnGateway>(vpnGateways);
      }
docs: <p>
  Information about one or more virtual private gateways.
  </p>
  
  @param vpnGateways
  Information about one or more virtual private gateways.