code: public ServiceFuture<GatewayRouteListResultInner> beginGetAdvertisedRoutesAsync(String resourceGroupName, String virtualNetworkGatewayName, String peer, final ServiceCallback<GatewayRouteListResultInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginGetAdvertisedRoutesWithServiceResponseAsync(resourceGroupName, virtualNetworkGatewayName, peer), serviceCallback);
      }
docs: This operation retrieves a list of routes the virtual network gateway is advertising to the specified peer.
  
  @param resourceGroupName The name of the resource group.
  @param virtualNetworkGatewayName The name of the virtual network gateway.
  @param peer The IP address of the peer
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object